[clang] [llvm] [LLVM] Add GNU make jobserver support (PR #145131)

[Yaxun Liu via cfe-commits]

================
@@ -119,7 +130,25 @@ class ThreadPoolExecutor : public Executor {
       auto Task = std::move(WorkStack.back());
       WorkStack.pop_back();
       Lock.unlock();
-      Task();
+
+      if (TheJobserver) {
+        JobSlot Slot = TheJobserver->tryAcquire();
+        if (Slot.isValid()) {
+          auto Releaser =
+              make_scope_exit([&] { TheJobserver->release(std::move(Slot)); });
----------------
yxsamliu wrote:

will do

https://github.com/llvm/llvm-project/pull/145131
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