--- a/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.common/src/org/graalvm/compiler/core/common/type/FloatStamp.java	Mon May 06 12:17:54 2019 -0700
+++ b/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.common/src/org/graalvm/compiler/core/common/type/FloatStamp.java	Mon May 06 21:50:20 2019 +0200
@@ -318,8 +318,10 @@
         /*
          * There are many forms of NaNs and any operations on them can silently convert them into
          * the canonical NaN.
+         *
+         * We need to exclude 0 here since it can contain -0.0 && 0.0 .
          */
-        return (Double.compare(lowerBound, upperBound) == 0 && nonNaN);
+        return (Double.compare(lowerBound, upperBound) == 0 && nonNaN) && lowerBound != 0;
     }
 
     private static FloatStamp stampForConstant(Constant constant) {