1. Make table size prime -- improves hashing performance vastly.
2. Reduce #hashes from 2 to 1 for initial inserts.
3. Fix incorrect assertion from last checkin.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7417 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed