8344232: [PPC64] secondary_super_cache does not scale well: C1 and interpreter

[TheRealMDoerr]

PPC64 implementation of ead0116. I have implemented a couple of rotate instructions.
The first commit only implements lookup_secondary_supers_table_var and uses it in C2. The second commit makes the changes to use it in the interpreter, runtime and C1.
C1 part is refactored such that the same code as before this patch is generated when UseSecondarySupersTable is disabled. Some stubs are modified to provide one more temp register.

Performance difference can be observed when C2 is disabled (measured on Power10):

-XX:TieredStopAtLevel=1 -XX:-UseSecondarySupersTable:
SecondarySuperCacheHits.test  avgt   15  13.028 ± 0.005  ns/op
SecondarySuperCacheInterContention.test     avgt   15  417.746 ± 19.046  ns/op
SecondarySuperCacheInterContention.test:t1  avgt   15  417.852 ± 17.814  ns/op
SecondarySuperCacheInterContention.test:t2  avgt   15  417.641 ± 23.431  ns/op
SecondarySuperCacheIntraContention.test  avgt   15  340.995 ± 5.620  ns/op

-XX:TieredStopAtLevel=1 -XX:+UseSecondarySupersTable:
SecondarySuperCacheHits.test  avgt   15  14.539 ± 0.002  ns/op
SecondarySuperCacheInterContention.test     avgt   15  25.667 ± 0.576  ns/op
SecondarySuperCacheInterContention.test:t1  avgt   15  25.709 ± 0.655  ns/op
SecondarySuperCacheInterContention.test:t2  avgt   15  25.626 ± 0.820  ns/op
SecondarySuperCacheIntraContention.test  avgt   15  22.466 ± 1.554  ns/op

SecondarySuperCacheHits seems to be slightly slower, but SecondarySuperCacheInterContention and SecondarySuperCacheIntraContention are much faster (when C2 is disabled).

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• JDK-8344232: [PPC64] secondary_super_cache does not scale well: C1 and interpreter (Enhancement - P4)

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