[ORC] Remove redundant locking of session mutex, update method name.

JITDylib::removeTracker already runs with the session mutex locked (and must do
so), so remove the redundant locking and add an 'IL_' ("inside lock") prefix to
the method name.

llvm/include/llvm/ExecutionEngine/Orc/Core.h

@@ -1297,7 +1297,7 @@ class JITDylib : public ThreadSafeRefCountedBase<JITDylib>,
   JITDylib(ExecutionSession &ES, std::string Name);
 
   std::pair<AsynchronousSymbolQuerySet, std::shared_ptr<SymbolDependenceMap>>
-  removeTracker(ResourceTracker &RT);
+  IL_removeTracker(ResourceTracker &RT);
 
   void transferTracker(ResourceTracker &DstRT, ResourceTracker &SrcRT);
 

llvm/lib/ExecutionEngine/Orc/Core.cpp

@@ -1266,7 +1266,7 @@ JITDylib::JITDylib(ExecutionSession &ES, std::string Name)
 
 std::pair<JITDylib::AsynchronousSymbolQuerySet,
           std::shared_ptr<SymbolDependenceMap>>
-JITDylib::removeTracker(ResourceTracker &RT) {
+JITDylib::IL_removeTracker(ResourceTracker &RT) {
   // Note: Should be called under the session lock.
   assert(State != Closed && "JD is defunct");
 
@@ -1305,9 +1305,7 @@ JITDylib::removeTracker(ResourceTracker &RT) {
       SymbolsToFail.push_back(Sym);
   }
 
-  AsynchronousSymbolQuerySet QueriesToFail;
-  auto Result = ES.runSessionLocked(
-      [&]() { return ES.IL_failSymbols(*this, std::move(SymbolsToFail)); });
+  auto Result = ES.IL_failSymbols(*this, std::move(SymbolsToFail));
 
   // Removed symbols should be taken out of the table altogether.
   for (auto &Sym : SymbolsToRemove) {
@@ -2198,7 +2196,8 @@ Error ExecutionSession::removeResourceTracker(ResourceTracker &RT) {
   runSessionLocked([&] {
     CurrentResourceManagers = ResourceManagers;
     RT.makeDefunct();
-    std::tie(QueriesToFail, FailedSymbols) = RT.getJITDylib().removeTracker(RT);
+    std::tie(QueriesToFail, FailedSymbols) =
+        RT.getJITDylib().IL_removeTracker(RT);
   });
 
   Error Err = Error::success();