diff -r e92153ed8bdc -r 29b0d0b61615 src/hotspot/share/gc/g1/g1CollectedHeap.cpp
--- a/src/hotspot/share/gc/g1/g1CollectedHeap.cpp	Mon Nov 25 12:30:24 2019 +0100
+++ b/src/hotspot/share/gc/g1/g1CollectedHeap.cpp	Mon Nov 25 12:31:39 2019 +0100
@@ -4226,7 +4226,7 @@
     HeapRegion* r = g1h->region_at(region_idx);
     assert(!g1h->is_on_master_free_list(r), "sanity");
 
-    Atomic::add(r->rem_set()->occupied_locked(), &_rs_length);
+    Atomic::add(&_rs_length, r->rem_set()->occupied_locked());
 
     if (!is_young) {
       g1h->hot_card_cache()->reset_card_counts(r);
@@ -4290,7 +4290,7 @@
 
     // Claim serial work.
     if (_serial_work_claim == 0) {
-      jint value = Atomic::add(1, &_serial_work_claim) - 1;
+      jint value = Atomic::add(&_serial_work_claim, 1) - 1;
       if (value == 0) {
         double serial_time = os::elapsedTime();
         do_serial_work();
@@ -4305,7 +4305,7 @@
     bool has_non_young_time = false;
 
     while (true) {
-      size_t end = Atomic::add(chunk_size(), &_parallel_work_claim);
+      size_t end = Atomic::add(&_parallel_work_claim, chunk_size());
       size_t cur = end - chunk_size();
 
       if (cur >= _num_work_items) {