[LLVMdev] [PATCH] FoldingSetNodeID: use MurmurHash2 instead of SuperFastHash

[Gregory Petrosyan]

Some additional info can be found at:

  http://murmurhash.googlepages.com/
  http://en.wikipedia.org/wiki/MurmurHash
  http://www.codeproject.com/KB/recipes/hash_functions.aspx

as well as in the patch description itself. Patch and benchmark attached.

        Gregory
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