# Sandy Bridge 5.05/6.05/7.05+11.6 13.0 +28%/36%/43%
# Ivy Bridge 5.05/6.05/7.05+10.3 11.6 +32%/41%/50%
# Haswell 4.43/5.29/6.19+7.80 8.79 +39%/49%/59%
+# Skylake 2.62/3.14/3.62+7.70 8.10 +27%/34%/40%
# Bulldozer 5.77/6.89/8.00+13.7 13.7 +42%/50%/58%
#
# (*) there are XOP, AVX1 and AVX2 code pathes, meaning that