8223363: Bad node estimate assertion failure 8223502: Node estimate for loop unswitching is not correct: assert(delta <= 2 * required) failed: Bad node estimate 8224648: assert(!exceeding_node_budget()) failed: Too many NODES required! failure with ctw Summary: Tighten the node estimates. New est_loop_clone_sz() implementation that will compute a "fan-out" complexity estimate as part of the size estimate (to better estimate complex loop body size after cloning). New est_loop_unroll_sz() function, used to estimate the size of a loop body att full/maximal unrolling. Correction to node budget final tests and asserts. Reviewed-by: neliasso, kvn

8223693: Memory wastage in size of per-region type buffers in GC Reviewed-by: kbarrett, sangheki

8223162: Improve ergonomics for Sparse PRT entry sizing Summary: Scale Sparse PRT table sizes exponentially according to region size. Reviewed-by: kbarrett, sangheki

8212807: tools/jar/multiRelease/Basic.java times out Reviewed-by: bchristi

8225048: Shenandoah x86_32 support Reviewed-by: erikj, rkennke

8225111: Make Shenandoah tests work with 32-bit VMs Reviewed-by: rkennke

8225104: 32-bit build failures after JDK-8222252 Reviewed-by: bobv, rkennke, dholmes

8223688: JShell: crash on the instantiation of raw anonymous class Reviewed-by: jlahoda

8080353: JShell: Better error message on attempting to add default method Summary: Special handling for errors with "default" modifier Reviewed-by: jlahoda

8225061: Performance regression in Regex Reviewed-by: naoto, alanb Contributed-by: claes.redestad@oracle.com, naoto.sato@oracle.com