Chris Bieneman 3a143ce2e7 Removing the static destructor from ManagedStatic.cpp by controlling the allocation and de-allocation of the mutex.
This patch adds a new llvm_call_once function which is used by the ManagedStatic implementation to safely initialize a global to avoid static construction and destruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219638 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-13 22:37:25 +00:00
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