--- old/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.phases.common/src/org/graalvm/compiler/phases/common/inlining/InliningUtil.java	2017-06-26 15:43:54.000000000 -0700
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.phases.common/src/org/graalvm/compiler/phases/common/inlining/InliningUtil.java	2017-06-26 15:43:54.000000000 -0700
@@ -516,7 +516,7 @@
         if (inlineGraph.hasUnsafeAccess()) {
             graph.markUnsafeAccess();
         }
-        assert inlineGraph.getSpeculationLog() == null : "Only the root graph should have a speculation log";
+        assert inlineGraph.getSpeculationLog() == null || inlineGraph.getSpeculationLog() == graph.getSpeculationLog() : "Only the root graph should have a speculation log";
 
         return returnValue;
     }