6969569: assert(is_static() && is_constant()) failed: illegal call to constant_value()

Summary: Add missing is_static guard.
Reviewed-by: twisti

src/share/vm/ci/ciField.cpp

@@ -339,7 +339,7 @@ void ciField::print() {
   if (_type != NULL) _type->print_name();
   else               tty->print("(reference)");
   tty->print(" is_constant=%s", bool_to_str(_is_constant));
-  if (_is_constant) {
+  if (_is_constant && is_static()) {
     tty->print(" constant_value=");
     _constant_value.print();
   }

src/share/vm/opto/macro.cpp

@@ -720,7 +720,7 @@ bool PhaseMacroExpand::scalar_replacement(AllocateNode *alloc, GrowableArray <Sa
       if (basic_elem_type == T_OBJECT || basic_elem_type == T_ARRAY) {
         if (!elem_type->is_loaded()) {
           field_type = TypeInstPtr::BOTTOM;
-        } else if (field != NULL && field->is_constant()) {
+        } else if (field != NULL && field->is_constant() && field->is_static()) {
           // This can happen if the constant oop is non-perm.
           ciObject* con = field->constant_value().as_object();
           // Do not "join" in the previous type; it doesn't add value,