[9] RFR (XS): 8087218: Constant fold loads from final instance fields in VM anonymous classes

Vladimir Ivanov vladimir.x.ivanov at oracle.com
Mon Jun 15 13:15:18 UTC 2015


Right now, VM doesn't constant fold loads final instance fields unless 
an experimental flag -XX:+TrustFinalNonStaticFields is turned on.
The only exception is classes in java.lang.invoke/sun.invoke packages.
It can be extended to VM anonymous classes because there is no hacking 
of finals going on with them:
   (1) they are part of private API (sun.misc.Unsafe);
   (2) they can't be serialized.

Testing: manual (verified in generated code that constant folding happens)


Best regards,
Vladimir Ivanov

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