hg: shenandoah/jdk: C1 shenandoah_wb expects obj in a register

[zgu at redhat.com]

Changeset: 4509123a17ea
Author:    zgu
Date:      2018-06-07 16:04 -0400
URL:       http://hg.openjdk.java.net/shenandoah/jdk/rev/4509123a17ea

C1 shenandoah_wb expects obj in a register

! src/hotspot/share/gc/shenandoah/c1/shenandoahBarrierSetC1.cpp
! src/hotspot/share/gc/shenandoah/c1/shenandoahBarrierSetC1.hpp