Workaround miscompilation by NVIDIA nvc

kernel/arm64/zdot_thunderx2t99.c

@@ -24,7 +24,12 @@ CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *****************************************************************************/
-
+#ifdef __NVCOMPILER
+#define NVCOMPVERS ( __NVCOMPILER_MAJOR__ * 100 + __NVCOMPILER_MINOR__ )
+#if (NVCOMPVERS < 2309)
+#pragma opt 1
+#endif
+#endif
 
 #include "common.h"