RFR: 6735527: Bitmap - speed up searches

[Kim Barrett]

> On Oct 26, 2018, at 8:18 PM, Kim Barrett <kim.barrett at oracle.com> wrote:
> 
> Please review this improvement to the performance of BitMap searches.
> 
> […]
> CR:
> https://bugs.openjdk.java.net/browse/JDK-6735527
> 
> Webrev:
> http://cr.openjdk.java.net/~kbarrett/6735527/open.00/
> http://cr.openjdk.java.net/~kbarrett/6735527/comparison.ods

It seems that .ods files can't be downloaded from cr.openjdk.java.net.
I've added a zip of the file, which does seem to be accessible.
http://cr.openjdk.java.net/~kbarrett/6735527/comparison.ods.zip

> Testing:
> mach5 tier1-5
> New gtest-based "microbenchmark".