RFR: 8073093: AARCH64: C2 generates poor code for ByteBuffer accesses

Andrew Haley aph at redhat.com
Thu Feb 19 08:58:13 UTC 2015

On 18/02/15 20:59, Vladimir Kozlov wrote:
> The code which eliminates MemBars for scalarized objects was added in jdk8:
> http://hg.openjdk.java.net/jdk9/jdk9/hotspot/rev/6f3fd5150b67
> An other store barrier change was also pushed into jdk8:
> http://hg.openjdk.java.net/jdk9/jdk9/hotspot/rev/fcf521c3fbc6
> I don't remember we did anything special with membars in jdk9.

OK, so the question of why it isn't being removed in this case
is interesting.  We can look at that later.


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