hg: jdk9/hs/hotspot: 8176513: Poor code quality for ByteBuffers

[vladimir.kozlov at oracle.com]

Changeset: 03f4b62f3562
Author:    roland
Date:      2017-03-15 18:18 -0700
URL:       http://hg.openjdk.java.net/jdk9/hs/hotspot/rev/03f4b62f3562

8176513: Poor code quality for ByteBuffers
Summary: Relaxes the condition under which MemBarCPUOrder nodes are added around unsafe accesses.
Reviewed-by: vlivanov, kvn, jrose

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