This destructor is run as part of static program termination, and
so all ManagedStatics (including this lock) will have been
destroyed by llvm_shutdown. Furthermore, if there is actually
a race condition during static program termination, then we are
just hiding a bug somewhere else, because other threads should
not be running at this point.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210717
91177308-0d34-0410-b5e6-
96231b3b80d8
//
PassRegistry::~PassRegistry() {
- sys::SmartScopedWriter<true> Guard(*Lock);
+ // Don't acquire the mutex here. This is destroyed during static execution of
+ // static destructors, after llvm_shutdown() has been called, so all instances
+ // of all ManagedStatics (including the Mutex), will have been destroyed as
+ // well.
PassRegistryImpl *Impl = static_cast<PassRegistryImpl*>(pImpl);
delete Impl;
pImpl = nullptr;