[Openmp-commits] [openmp] [Libomptarget] Remove global ctor and use reference counting (PR #80499)

[Jon Chesterfield via Openmp-commits]

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@@ -48,7 +48,8 @@ void deinitRuntime() {
   std::scoped_lock<decltype(PluginMtx)> Lock(PluginMtx);
   assert(PM && "Runtime not initialized");
 
-  if (RefCount-- == 0) {
+  RefCount--;
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JonChesterfield wrote:

This looks wrong - you're separating the decrement from the load, should be a fetch_sub followed by a branch on the old value

https://github.com/llvm/llvm-project/pull/80499