--- old/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir/src/org/graalvm/compiler/lir/LIRValueUtil.java	2017-11-03 23:56:55.776864632 -0700
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.lir/src/org/graalvm/compiler/lir/LIRValueUtil.java	2017-11-03 23:56:55.447849909 -0700
@@ -69,6 +69,16 @@
         return asConstantValue(value).getJavaConstant();
     }
 
+    public static boolean isIntConstant(Value value, long expected) {
+        if (isJavaConstant(value)) {
+            JavaConstant javaConstant = asJavaConstant(value);
+            if (javaConstant != null && javaConstant.getJavaKind().isNumericInteger()) {
+                return javaConstant.asLong() == expected;
+            }
+        }
+        return false;
+    }
+
     public static boolean isStackSlotValue(Value value) {
         assert value != null;
         return value instanceof StackSlot || value instanceof VirtualStackSlot;