Merge pull request dotnet/coreclr#10484 from mikedn/map-vn-assert
authorJoseph Tremoulet <JCTremoulet@gmail.com>
Mon, 27 Mar 2017 15:45:18 +0000 (11:45 -0400)
committerGitHub <noreply@github.com>
Mon, 27 Mar 2017 15:45:18 +0000 (11:45 -0400)
Correctly update bitvector in optAddVnAssertionMapping

Commit migrated from https://github.com/dotnet/coreclr/commit/61830e9d70423d0d48bf1d2912fdb921d618e60f


Trivial merge