Remove extra barriers

Don't flush current batch if the dependent wait is a nop Change-Id: I8a8722b9011fe042c1a4ce195938290fc75e7c86 [ROCm/clr commit: c18892a590]
2020-06-19 13:49:43 -04:00
parent b7801b2035
commit ebe5c3d381
1 changed files with 6 additions and 3 deletions
@@ -140,9 +140,12 @@ void HostQueue::loop(device::VirtualDevice* virtualDevice) {
    for (const auto& it : events) {
      // Only wait if the command is enqueued into another queue.
      if (it->command().queue() != this) {
-        virtualDevice->flush(head, true);
-        tail = head = NULL;
-        dependencyFailed |= !it->awaitCompletion();
+        // Runtime has to flush the current batch only if the dependent wait is blocking
+        if (it->command().status() != CL_COMPLETE) {
+          virtualDevice->flush(head, true);
+          tail = head = NULL;
+          dependencyFailed |= !it->awaitCompletion();
+        }
      }
    }