Reviewed-by: kvn

Summary: Partial backport of 8080600 to make AArch64 a known platform
Reviewed-by: dholmes, coleenp

Reviewed-by: dholmes

Summary: CMSClassUnloadingEnabled and ExplicitGCInvokesConcurrentAndUnloadsClasses should be disabled when -Xnoclassgc is specified
Reviewed-by: jmasa, kbarrett

Reviewed-by: stefank, tschatzl, thartmann

Reviewed-by: dholmes

Reviewed-by: dholmes

Summary: metaspace/shrink_grow/CompressedClassSpaceSize fails with OOM: Compressed class space
Reviewed-by: jmasa, kbarrett

Summary: Node::depends_only_on_test() should return false for Unsafe loads
Reviewed-by: kvn, adinn

Summary: Added test to check correctness of type propagation to CmpUNodes.
Reviewed-by: kvn

Summary: CmpU needs to be reprocessed by CCP when an AddI/SubI input's input type change
Reviewed-by: mcberg, kvn, roland
Contributed-by: andreas.eriksson@oracle.com

Reviewed-by: dholmes, vlivanov
Contributed-by: NDenis Kononenko <denis.kononenko@oracle.com>

Reviewed-by: dholmes

Summary: the cached class file structure must be deallocated instead of the cached class file bytes
Reviewed-by: coleenp, sla

Reviewed-by: kvn

8061715: gc/g1/TestShrinkAuxiliaryData15.java fails with java.lang.RuntimeException: heap decommit failed - after > before
Summary: added WhiteBox methods to count regions and exact aux data sizes
Reviewed-by: jwilhelm, brutisso