RFR (XS): -ShenandoahSATBBarrier disables matrix updates

Aleksey Shipilev shade at redhat.com
Mon Mar 20 15:40:00 UTC 2017


While studying the generated code, I realized that -ShenandoahSATBBuffer
disables matrix updates too. Oops. This does not affect our performance runs
just yet, because we enable SATB barriers before enabling matrix barriers. We
should fix this oddity nevertheless:

Testing: hotspot_gc_shenandoah, eyeballing assembly


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