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src/share/vm/opto/graphKit.cpp

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@@ -4277,10 +4277,14 @@
   if (val->bottom_type()->higher_equal(TypePtr::NULL_PTR)) {
     // Nothing to do.
     return;
   }
 
+  if (!UseShenandoahMatrix) {
+    return;
+  }
+
   ShenandoahConnectionMatrix* matrix = ShenandoahHeap::heap()->connection_matrix();
 
   enum { _not_null_path = 1, _null_path, PATH_LIMIT };
   RegionNode* region = new RegionNode(PATH_LIMIT);
   Node* prev_mem = memory(Compile::AliasIdxRaw);
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