RFR (L): 7153771: array bound check elimination for c1

[Roland Westrelin]

> Did C1 compilation time increased? And how much?

Here are increase in compilation time I measure with the reference_server (change in Total compilation time as reported by -XX:+CITime, mean over 5 runs):

jetstream: +2%
scimark: +10%
specjbb2000: +4%
specjbb2005: +4%
specjvm98: +2%
volano25 (client): +8%
volano25 (server): +1%

Roland.