8178800: compiler/c2/PolynomialRoot.java fails on Xeon Phi linux host with UseAVX=3 Summary: upper register bank support added for novl machines that emit EVEX Reviewed-by: kvn, thartmann

^build/
^dist/
^.idea/
nbproject/private/
^webrev
^.src-rev$
^.jib/
.DS_Store
.metadata/
.recommenders/