--- a/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir/src/org/graalvm/compiler/lir/alloc/lsra/LinearScanLifetimeAnalysisPhase.java	Thu Oct 31 14:23:06 2019 -0700
+++ b/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir/src/org/graalvm/compiler/lir/alloc/lsra/LinearScanLifetimeAnalysisPhase.java	Thu Oct 31 16:54:16 2019 -0700
@@ -881,7 +881,12 @@
                     }
                 }
             }
-            return move.getConstant();
+            Constant constant = move.getConstant();
+            if (!(constant instanceof JavaConstant)) {
+                // Other kinds of constants might not be supported by the generic move operation.
+                return null;
+            }
+            return constant;
         }
         return null;
     }