[GR-11293] Allow cloning our relevant root nodes.

PullRequest: graalpython/161

Author: timfel

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/TruffleCextBuiltins.java

@@ -692,6 +692,11 @@ public final PythonContext getContext() {
         public String getName() {
             return name;
         }
+
+        @Override
+        public boolean isCloningAllowed() {
+            return true;
+        }
     }
 
     abstract static class PNativeToPTypeNode extends PForeignToPTypeNode {
@@ -1422,6 +1427,11 @@ protected MethodDescriptorRoot(PythonLanguage language, PythonObjectFactory fact
             this.readSelfNode = ReadIndexedArgumentNode.create(0);
             this.directCallNode = Truffle.getRuntime().createDirectCallNode(callTarget);
         }
+
+        @Override
+        public boolean isCloningAllowed() {
+            return true;
+        }
     }
 
     static class MethKeywordsRoot extends MethodDescriptorRoot {

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/common/HashingStorage.java

@@ -129,6 +129,11 @@ public Object execute(VirtualFrame frame) {
         public SourceSection getSourceSection() {
             return null;
         }
+
+        @Override
+        public boolean isCloningAllowed() {
+            return true;
+        }
     }
 
     private static class EqualsRootNode extends RootNode {
@@ -149,6 +154,11 @@ public Object execute(VirtualFrame frame) {
         public SourceSection getSourceSection() {
             return null;
         }
+
+        @Override
+        public boolean isCloningAllowed() {
+            return true;
+        }
     }
 
     public static class SlowPathEquivalence extends Equivalence {

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/nodes/PRootNode.java

@@ -72,4 +72,9 @@ public void setNeedsCallerFrame() {
     public boolean isCaptureFramesForTrace() {
         return true;
     }
+
+    @Override
+    public boolean isCloningAllowed() {
+        return true;
+    }
 }