hg: jdk/sandbox: 8242449: AArch64: r27 can be allocated in CompressedOops mode

[chris.hegarty at oracle.com]

Changeset: aedc9bf21743
Author:    pli
Date:      2020-04-20 09:40 +0000
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/aedc9bf21743

8242449: AArch64: r27 can be allocated in CompressedOops mode
Reviewed-by: aph, xliu
Contributed-by: kuaiwei.kw at alibaba-inc.com

! src/hotspot/cpu/aarch64/aarch64.ad
! src/hotspot/cpu/aarch64/macroAssembler_aarch64.cpp