How-to implement intrinsic in JVM?

[james wang]

Hi all,

   Is there any guideline about how to implement new intrinsic (line
popcnt, reversebytes, etc.) in JVM? I found a patch about reversebytes(
http://cr.openjdk.java.net/~rasbold/reversebytes/webrev.01/), but didn't
known the correct steps to accomplish it.

Thanks!
James
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