hg: jdk/sandbox: 8231754: [JVMCI] Make r27 unconditionally reserved in JVMCI

[chris.hegarty at oracle.com]

Changeset: d068b1e534de
Author:    yzheng
Date:      2019-10-16 16:54 +0200
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/d068b1e534de

8231754: [JVMCI] Make r27 unconditionally reserved in JVMCI
Summary: Reserve r27 (heap base register) on AArch64 unconditionally
Reviewed-by: adinn, dlong

! src/jdk.internal.vm.ci/share/classes/jdk.vm.ci.hotspot.aarch64/src/jdk/vm/ci/hotspot/aarch64/AArch64HotSpotJVMCIBackendFactory.java
! src/jdk.internal.vm.ci/share/classes/jdk.vm.ci.hotspot.aarch64/src/jdk/vm/ci/hotspot/aarch64/AArch64HotSpotRegisterConfig.java