Add regression tests for returning class objects from functions

Check that returning class objects from functions is supported.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>

ivtest/ivltests/sv_class_return.v

@@ -0,0 +1,29 @@
+// Check that functions returning a class object are supported
+
+module test;
+
+  class C;
+    int i;
+    task t;
+      if (i == 10) begin
+        $display("PASSED");
+      end else begin
+        $display("FAILED");
+      end
+    endtask
+  endclass
+
+  function C f;
+    C c;
+    c = new;
+    c.i = 10;
+    return c;
+  endfunction
+
+  initial begin
+    C c;
+    c = f();
+    c.t;
+  end
+
+endmodule

ivtest/regress-sv.list

@@ -532,6 +532,7 @@ sv_class_property_signed1	normal,-g2009	ivltests
 sv_class_property_signed2	normal,-g2009	ivltests
 sv_class_property_signed3	normal,-g2009	ivltests
 sv_class_property_signed4	normal,-g2009	ivltests
+sv_class_return		normal,-g2009		ivltests
 sv_class_static_prop1	normal,-g2009		ivltests
 sv_class_static_prop2	normal,-g2009		ivltests
 sv_class_static_prop3	normal,-g2009		ivltests