recompose this grid

testing results for: sql
power8
GNU-Fed-p64
sql/test/wlcr28.559 
wlr20 X X0.865 
wlr30 X X1.014 
wlr40 X O0.674 
wlr50 X O0.639 
wlr70 X O4.771 
wlr100 X O5.613 
72839 (linear-hashing)