8231720: Some perf regressions after 8225653
Summary: Fixed emitting of unused assembly code in 8225653 which had a negative impact on performance in tight loops.
Reviewed-by: kvn, thartmann
^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/
^src/utils/hsdis/build/