hg: jdk/jdk12: 8215100: AArch64: fix compareTo intrinsic with four-character Latin/Unicode

[aph at redhat.com]

Changeset: 147e2d96748d
Author:    aph
Date:      2018-12-20 17:07 +0000
URL:       http://hg.openjdk.java.net/jdk/jdk12/rev/147e2d96748d

8215100: AArch64: fix compareTo intrinsic with four-character Latin/Unicode
Reviewed-by: aph, dpochepk
Contributed-by: nick.gasson at arm.com

! src/hotspot/cpu/aarch64/macroAssembler_aarch64.cpp
! test/hotspot/jtreg/compiler/intrinsics/string/TestStringIntrinsics2.java