Remove unnecessary caching

caching is happening within IsSubtypeNode

Author: qunaibit

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/type/PythonBuiltinClass.java

@@ -32,10 +32,8 @@
 import com.oracle.graal.python.builtins.objects.object.PythonObjectLibrary;
 import com.oracle.graal.python.nodes.ErrorMessages;
 import com.oracle.graal.python.nodes.classes.IsSubtypeNode;
-import com.oracle.truffle.api.Assumption;
 import com.oracle.truffle.api.CompilerAsserts;
 import com.oracle.truffle.api.dsl.Cached;
-import com.oracle.truffle.api.dsl.Specialization;
 import com.oracle.truffle.api.interop.InteropLibrary;
 import com.oracle.truffle.api.library.CachedLibrary;
 import com.oracle.truffle.api.library.ExportLibrary;
@@ -83,29 +81,11 @@ boolean isMetaObject() {
     }
 
     @ExportMessage
-    static class IsMetaInstance {
-
-        protected static boolean isInstance(PythonBuiltinClass receiver, Object instance, PythonObjectLibrary plib, IsSubtypeNode isSubtype) {
-            return isSubtype.execute(plib.getLazyPythonClass(instance), receiver);
-        }
-
-        @SuppressWarnings("unused")
-        @Specialization(guards = "instance == instanceCached", assumptions = "singleContextAssumption", limit = "3")
-        static boolean isMetaInstanceCached(PythonBuiltinClass receiver, Object instance,
-                        @CachedLibrary("instance") PythonObjectLibrary plib,
-                        @Cached IsSubtypeNode isSubtype,
-                        @Cached("instance") Object instanceCached,
-                        @Cached("isInstance(receiver, instanceCached, plib, isSubtype)") boolean isInstance,
-                        @SuppressWarnings("unused") @Cached(value = "getSingleContextAssumption()", allowUncached = true) Assumption singleContextAssumption) {
-            return isInstance;
-        }
-
-        @Specialization(replaces = "isMetaInstanceCached")
-        static boolean isMetaInstance(PythonBuiltinClass receiver, Object instance,
-                        @CachedLibrary(limit = "3") PythonObjectLibrary plib,
-                        @Cached IsSubtypeNode isSubtype) {
-            return isInstance(receiver, instance, plib, isSubtype);
-        }
+    @SuppressWarnings("static-method")
+    boolean isMetaInstance(Object instance,
+                    @CachedLibrary(limit = "3") PythonObjectLibrary plib,
+                    @Cached IsSubtypeNode isSubtype) {
+        return isSubtype.execute(plib.getLazyPythonClass(instance), this);
     }
 
     @ExportMessage