diff -r 13588c901957 -r 9cf78a70fa4f src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/HotSpotReplacementsImpl.java
--- a/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/HotSpotReplacementsImpl.java	Thu Oct 17 20:27:44 2019 +0100
+++ b/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/HotSpotReplacementsImpl.java	Thu Oct 17 20:53:35 2019 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -41,6 +41,7 @@
 import org.graalvm.compiler.graph.NodeSourcePosition;
 import org.graalvm.compiler.hotspot.meta.HotSpotWordOperationPlugin;
 import org.graalvm.compiler.hotspot.word.HotSpotOperation;
+import org.graalvm.compiler.nodes.Cancellable;
 import org.graalvm.compiler.nodes.Invoke;
 import org.graalvm.compiler.nodes.StructuredGraph;
 import org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderContext;
@@ -91,7 +92,7 @@
     }
 
     @Override
-    public StructuredGraph getIntrinsicGraph(ResolvedJavaMethod method, CompilationIdentifier compilationId, DebugContext debug) {
+    public StructuredGraph getIntrinsicGraph(ResolvedJavaMethod method, CompilationIdentifier compilationId, DebugContext debug, Cancellable cancellable) {
         boolean useEncodedGraphs = UseEncodedGraphs.getValue(debug.getOptions());
         if (IS_IN_NATIVE_IMAGE || useEncodedGraphs) {
             HotSpotReplacementsImpl replacements = (HotSpotReplacementsImpl) providers.getReplacements();
@@ -101,13 +102,13 @@
                 if (useEncodedGraphs) {
                     replacements.registerMethodSubstitution(msp, method, ROOT_COMPILATION, debug.getOptions());
                 }
-                StructuredGraph methodSubstitution = replacements.getMethodSubstitution(msp, method, ROOT_COMPILATION, StructuredGraph.AllowAssumptions.YES, debug.getOptions());
+                StructuredGraph methodSubstitution = replacements.getMethodSubstitution(msp, method, ROOT_COMPILATION, StructuredGraph.AllowAssumptions.YES, cancellable, debug.getOptions());
                 methodSubstitution.resetDebug(debug);
                 return methodSubstitution;
             }
             return null;
         }
-        return super.getIntrinsicGraph(method, compilationId, debug);
+        return super.getIntrinsicGraph(method, compilationId, debug, cancellable);
     }
 
     @Override
@@ -122,7 +123,7 @@
                 }
                 // This assumes the normal path creates the graph using
                 // GraphBuilderConfiguration.getSnippetDefault with omits exception edges
-                StructuredGraph subst = getMethodSubstitution(msPlugin, targetMethod, INLINE_AFTER_PARSING, StructuredGraph.AllowAssumptions.NO, options);
+                StructuredGraph subst = getMethodSubstitution(msPlugin, targetMethod, INLINE_AFTER_PARSING, StructuredGraph.AllowAssumptions.NO, null, options);
                 return subst;
             }
         }
@@ -207,6 +208,7 @@
         return super.getSnippet(method, recursiveEntry, args, trackNodeSourcePosition, replaceePosition, options);
     }
 
+    @SuppressWarnings("try")
     private StructuredGraph getEncodedSnippet(ResolvedJavaMethod method, Object[] args, StructuredGraph.AllowAssumptions allowAssumptions, OptionValues options) {
         boolean useEncodedGraphs = UseEncodedGraphs.getValue(options);
         if (IS_IN_NATIVE_IMAGE || useEncodedGraphs) {
@@ -218,11 +220,15 @@
                 if (getEncodedSnippets() == null) {
                     throw GraalError.shouldNotReachHere("encoded snippets not found");
                 }
-                StructuredGraph graph = getEncodedSnippets().getEncodedSnippet(method, this, args, allowAssumptions, options);
-                if (graph == null) {
-                    throw GraalError.shouldNotReachHere("snippet not found: " + method.format("%H.%n(%p)"));
+                // Snippets graphs can contain foreign object reference and
+                // outlive a single compilation.
+                try (CompilationContext scope = HotSpotGraalServices.enterGlobalCompilationContext()) {
+                    StructuredGraph graph = getEncodedSnippets().getEncodedSnippet(method, this, args, allowAssumptions, options);
+                    if (graph == null) {
+                        throw GraalError.shouldNotReachHere("snippet not found: " + method.format("%H.%n(%p)"));
+                    }
+                    return graph;
                 }
-                return graph;
             }
         } else {
             assert registeredSnippets == null || registeredSnippets.contains(method) : "Asking for snippet method that was never registered: " + method.format("%H.%n(%p)");
@@ -232,7 +238,7 @@
 
     @Override
     public StructuredGraph getMethodSubstitution(MethodSubstitutionPlugin plugin, ResolvedJavaMethod original, IntrinsicContext.CompilationContext context,
-                    StructuredGraph.AllowAssumptions allowAssumptions, OptionValues options) {
+                    StructuredGraph.AllowAssumptions allowAssumptions, Cancellable cancellable, OptionValues options) {
         boolean useEncodedGraphs = UseEncodedGraphs.getValue(options);
         if (IS_IN_NATIVE_IMAGE || useEncodedGraphs) {
             if (!IS_IN_NATIVE_IMAGE) {
@@ -242,7 +248,7 @@
             if (getEncodedSnippets() == null) {
                 throw GraalError.shouldNotReachHere("encoded snippets not found");
             }
-            return getEncodedSnippets().getMethodSubstitutionGraph(plugin, original, this, context, allowAssumptions, options);
+            return getEncodedSnippets().getMethodSubstitutionGraph(plugin, original, this, context, allowAssumptions, cancellable, options);
         }
         return null;
     }