Support 'PInt' in 'SSN.SetScalarItemNode'.

Author: fangerer

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

@@ -543,10 +543,32 @@ protected void doInt(IntSequenceStorage storage, int idx, int value) {
             storage.setIntItemNormalized(idx, value);
         }
 
+        @Specialization
+        protected void doInt(IntSequenceStorage storage, int idx, PInt value) {
+            try {
+                storage.setIntItemNormalized(idx, value.intValueExact());
+            } catch (ArithmeticException e) {
+                // TODO implement store generalization
+                CompilerDirectives.transferToInterpreter();
+                throw new UnsupportedOperationException();
+            }
+        }
+
         protected void doLong(LongSequenceStorage storage, int idx, long value) {
             storage.setLongItemNormalized(idx, value);
         }
 
+        @Specialization
+        protected void doLong(LongSequenceStorage storage, int idx, PInt value) {
+            try {
+                storage.setLongItemNormalized(idx, value.longValueExact());
+            } catch (ArithmeticException e) {
+                // TODO implement store generalization
+                CompilerDirectives.transferToInterpreter();
+                throw new UnsupportedOperationException();
+            }
+        }
+
         @Specialization
         protected void doDouble(DoubleSequenceStorage storage, int idx, double value) {
             storage.setDoubleItemNormalized(idx, value);