[aarch64-port-dev ] 8u backport: 8154537: AArch64: some integer rotate instructions are never emitted

[Roland Westrelin]

I'm backporting 8154537 (pushed to 9 yesterday) to
http://hg.openjdk.java.net/aarch64-port/jdk8u
That patch applies cleanly. Here is the jdk 9 patch for the record:

http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/52cfeb90ea8b

Roland.