Rewritten parameter casts for compilePKGS builtin.

com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/base/CompilePKGS.java

@@ -26,6 +26,7 @@ import static com.oracle.truffle.r.runtime.builtins.RBehavior.COMPLEX;
 import static com.oracle.truffle.r.runtime.builtins.RBuiltinKind.INTERNAL;
 
 import com.oracle.truffle.api.dsl.Specialization;
+import com.oracle.truffle.r.nodes.builtin.CastBuilder;
 import com.oracle.truffle.r.nodes.builtin.RBuiltinNode;
 import com.oracle.truffle.r.runtime.builtins.RBuiltin;
 
@@ -35,6 +36,11 @@ import com.oracle.truffle.r.runtime.builtins.RBuiltin;
 @RBuiltin(name = "compilePKGS", kind = INTERNAL, parameterNames = "enable", behavior = COMPLEX)
 public abstract class CompilePKGS extends RBuiltinNode {
 
+    @Override
+    protected void createCasts(CastBuilder casts) {
+        casts.arg("enable").asIntegerVector().findFirst();
+    }
+
     @Specialization
     protected byte compilePKGS(@SuppressWarnings("unused") int enable) {
         return 0;