hg: jdk/sandbox: 8231583: Shenandoah: Fix register clash in SBSA::resolve_forwarding_pointer() borrowing

[chris.hegarty at oracle.com]

Changeset: b14643d898d3
Author:    shade
Date:      2019-09-30 18:02 +0200
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/b14643d898d3

8231583: Shenandoah: Fix register clash in SBSA::resolve_forwarding_pointer() borrowing
Reviewed-by: rkennke

! src/hotspot/cpu/aarch64/gc/shenandoah/shenandoahBarrierSetAssembler_aarch64.cpp
! src/hotspot/cpu/x86/gc/shenandoah/shenandoahBarrierSetAssembler_x86.cpp