hg: jdk/sandbox: 8224828: aarch64: rflags is not correct after safepoint poll

[chris.hegarty at oracle.com]

Changeset: 6515a96809a1
Author:    fyang
Date:      2019-05-30 10:29 +0800
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/6515a96809a1

8224828: aarch64: rflags is not correct after safepoint poll
Reviewed-by: aph, adinn
Contributed-by: Xiang Yuan <yuanxiang4 at huawei.com>

! src/hotspot/cpu/aarch64/aarch64.ad
! src/hotspot/cpu/aarch64/sharedRuntime_aarch64.cpp