hg: shenandoah/jdk8u/hotspot: missing barriers in String intrinsics with -ShenandoahOptimizeInstanceFinals -ShenandoahOptimizeStableFinals

[rwestrel at redhat.com]

Changeset: 49a3760b11a2
Author:    roland
Date:      2017-10-30 13:35 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk8u/hotspot/rev/49a3760b11a2

missing barriers in String intrinsics with -ShenandoahOptimizeInstanceFinals -ShenandoahOptimizeStableFinals

! src/share/vm/opto/library_call.cpp