8210164: building Minimal VM fails with error: comparison of unsigned expression < 0 is always false [-Werror=type-limits]
Summary: Conditionalize compare with serial_phase_count.
Reviewed-by: kbarrett, shade
^build/
^dist/
^.idea/
nbproject/private/
^webrev
^.src-rev$
^.jib/
\.DS_Store
\.metadata/
\.recommenders/
test/nashorn/script/external
test/nashorn/lib
NashornProfile.txt
.*/JTreport/.*
.*/JTwork/.*
.*/.git/.*