orig	16bit	%inc

O0		9.048	9.049	.01
		9.050	9.035	0
O1		5.557	5.592	.63
		5.550	5.595	.81
O2		5.465	5.538	1.3
		5.460	5.535	1.4
O3		4.784	4.830	.96
		4.775	4.820	.94
O3 omit		4.695	4.747	1.1
		4.690	4.750	1.3
O3 omit unroll	4.694	4.738	.94
		4.695	4.735	.85
O3 -g		4.786	4.841	1.1
		4.780	4.840	1.3
Os		5.475	5.525	.91
		5.475	5.515	.73