Hi, May I get review for enhancement backport of 8154156: PPC64: improve array copy stubs by using vector instructions? To make this patch buildable (and usable by other planned backports listed in [1]), I cherry picked config_dscr() and its dependent code from [2,3] and has_mfdscr() from [4]. Original patch: http://hg.openjdk.java.net/jdk/jdk/rev/c9d756fa846e Weberv: http://cr.openjdk.java.net/~horii/jdk8u_aes_be/8154156/webrev.01/ I confirmed it was buildable for both relase and fastdebug builds, and JTREG caused no degradation. Refs: [1] http://mail.openjdk.java.net/pipermail/ppc-aix-port-dev/2018-December/003818... [2] 8149655: PPC64: Implement CompactString intrinsics http://hg.openjdk.java.net/jdk/jdk/rev/6241574f5982 [3] 8080684: PPC64: Fix little-endian build after "8077838: Recent developments for ppc" http://hg.openjdk.java.net/jdk/jdk/rev/12ccf8b26eb0 [4] 8077838: Recent developments for ppc. http://hg.openjdk.java.net/jdk/jdk/rev/c703c89fddbf Regards, Ogata