Calculation of hash for huge integers moved to PInt

Author: otethal

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/ints/IntBuiltins.java

@@ -57,7 +57,6 @@
 import com.oracle.graal.python.builtins.PythonBuiltinClassType;
 import com.oracle.graal.python.builtins.PythonBuiltins;
 import com.oracle.graal.python.builtins.modules.MathGuards;
-import com.oracle.graal.python.builtins.modules.SysModuleBuiltins;
 import com.oracle.graal.python.builtins.objects.PNone;
 import com.oracle.graal.python.builtins.objects.PNotImplemented;
 import com.oracle.graal.python.builtins.objects.array.PArray;
@@ -2657,9 +2656,8 @@ long hash(long self) {
         }
 
         @Specialization
-        @TruffleBoundary
         long hash(PInt self) {
-            return self.getValue().remainder(BigInteger.valueOf(SysModuleBuiltins.HASH_MODULUS)).longValue();
+            return self.hash();
         }
 
         @Specialization

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/ints/PInt.java

@@ -31,6 +31,7 @@
 
 import com.oracle.graal.python.PythonLanguage;
 import com.oracle.graal.python.builtins.PythonBuiltinClassType;
+import com.oracle.graal.python.builtins.modules.SysModuleBuiltins;
 import com.oracle.graal.python.builtins.objects.cext.PythonNativeWrapperLibrary;
 import com.oracle.graal.python.builtins.objects.function.PArguments.ThreadState;
 import com.oracle.graal.python.builtins.objects.object.PythonBuiltinObject;
@@ -538,4 +539,15 @@ public BigInteger subtract(PInt other) {
     public BigInteger add(PInt other) {
         return add(other.value);
     }
+
+    @ExportMessage
+    public long hash() {
+        return hashBigInteger(value);
+    }
+
+    @TruffleBoundary
+    public static long hashBigInteger(BigInteger i) {
+        long h = i.remainder(BigInteger.valueOf(SysModuleBuiltins.HASH_MODULUS)).longValue();
+        return h == -1 ? -2 : h;
+    }
 }