Merge pull request dotnet/coreclr#9224 from stephentoub/spinlock_tryenter_perf
authorStephen Toub <stoub@microsoft.com>
Tue, 31 Jan 2017 22:54:43 +0000 (17:54 -0500)
committerGitHub <noreply@github.com>
Tue, 31 Jan 2017 22:54:43 +0000 (17:54 -0500)
Make SpinLock.TryEnter(ref bool) fail faster

Commit migrated from https://github.com/dotnet/coreclr/commit/93afcb59e6fcb601209045e608c5e6fa3e4bdc91


Trivial merge