hg: jdk/sandbox: 8218136: minor hotspot adjustments for xlclang++ from xlc16 on AIX

[chris.hegarty at oracle.com]

Changeset: 1d942423516c
Author:    mbaesken
Date:      2019-02-05 17:40 +0100
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/1d942423516c

8218136: minor hotspot adjustments for xlclang++ from xlc16 on AIX
Reviewed-by: dholmes, goetz, ihse

! src/hotspot/os/aix/porting_aix.cpp
! src/hotspot/os_cpu/aix_ppc/prefetch_aix_ppc.inline.hpp
! src/hotspot/share/runtime/arguments.cpp
! src/hotspot/share/runtime/arguments.hpp
! src/hotspot/share/utilities/globalDefinitions_xlc.hpp