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

Vladimir Ivanov vladimir.x.ivanov at oracle.com
Mon Jun 15 16:05:26 UTC 2015

Rickard, Vladimir, thanks for review.

Best regards, Vladimir Ivanov

On 6/15/15 7:03 PM, Vladimir Kozlov wrote:

Good.

Thanks, Vladimir On 6/15/15 6:15 AM, Vladimir Ivanov wrote: http://cr.openjdk.java.net/~vlivanov/8087218/webrev.00 https://bugs.openjdk.java.net/browse/JDK-8087218

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) Thanks! Best regards, Vladimir Ivanov

More information about the hotspot-compiler-dev mailing list