https://bugs.openjdk.java.net/browse/JDK-8214583
http://cr.openjdk.java.net/~dlong/8214583/webrev
This change includes two new regression test that demonstrate the
problem, and a fix that allows the tests
to pass.
The problem happens when the JIT compiler's escape analysis eliminates
the allo
Hi Dean,
to avoid escape analysis-eliminated allocations in the past @DontInline
has been sufficient. This means a simpler patch (no changes to native
code needed - added assertions notwithstanding) and passes your tests
with C2 (it'd concern me if Graal's EA sees through this trick, as it
might
On 15/12/2018 10:59 am, dean.l...@oracle.com wrote:
https://bugs.openjdk.java.net/browse/JDK-8214583
http://cr.openjdk.java.net/~dlong/8214583/webrev
This change includes two new regression test that demonstrate the
problem, and a fix that allows the tests
to pass.
The problem happens when th
On 12/16/18 4:06 PM, David Holmes wrote:
On 15/12/2018 10:59 am, dean.l...@oracle.com wrote:
https://bugs.openjdk.java.net/browse/JDK-8214583
http://cr.openjdk.java.net/~dlong/8214583/webrev
This change includes two new regression test that demonstrate the
problem, and a fix that allows the te
On 17/12/2018 12:49 pm, dean.l...@oracle.com wrote:
On 12/16/18 4:06 PM, David Holmes wrote:
On 15/12/2018 10:59 am, dean.l...@oracle.com wrote:
https://bugs.openjdk.java.net/browse/JDK-8214583
http://cr.openjdk.java.net/~dlong/8214583/webrev
This change includes two new regression test that d
On 12/16/18 7:03 PM, David Holmes wrote:
On 17/12/2018 12:49 pm, dean.l...@oracle.com wrote:
On 12/16/18 4:06 PM, David Holmes wrote:
On 15/12/2018 10:59 am, dean.l...@oracle.com wrote:
https://bugs.openjdk.java.net/browse/JDK-8214583
http://cr.openjdk.java.net/~dlong/8214583/webrev
This chan
Unfortunately, I don't think @DontInline on an empty method is sufficient
here. If other code is relying on @DontInline for the same purpose then
we might need to reexamine that code. My understanding from discussing
with other compiler engineers is that using a native method is the safest
techn
On 12/16/18 7:39 PM, dean.l...@oracle.com wrote:
On 12/16/18 7:03 PM, David Holmes wrote:
On 17/12/2018 12:49 pm, dean.l...@oracle.com wrote:
On 12/16/18 4:06 PM, David Holmes wrote:
On 15/12/2018 10:59 am, dean.l...@oracle.com wrote:
https://bugs.openjdk.java.net/browse/JDK-8214583
http://cr
Fair enough, I wasn't aware EA was looking beyond the inlined code like
this (which means it can't be "dead" or the JIT might see through the
trick at some point). I've skimmed the existing usages in the JDK and
can't find anything that seems to be dependent on DontInline defeating
EA - maybe ther
On 12/16/18 9:52 PM, Claes Redestad wrote:
Either way, it might be nice to have a more explicit facility for this
in a future release, as David suggested. Say an @Escaping local
variable/parameter annotation.
I agree. I suggested @Escapes or @StackWalkable in JDK-8214585.
@Escaping or
@Sta
On 12/16/18 9:52 PM, Claes Redestad wrote:
Fair enough, I wasn't aware EA was looking beyond the inlined code like
this (which means it can't be "dead" or the JIT might see through the
trick at some point). I've skimmed the existing usages in the JDK and
can't find anything that seems to be depen
This looks okay to me.
Mandy
On 12/14/18 4:59 PM, dean.l...@oracle.com wrote:
https://bugs.openjdk.java.net/browse/JDK-8214583
http://cr.openjdk.java.net/~dlong/8214583/webrev
This change includes two new regression test that demonstrate the
problem, and a fix that allows the tests
to pass.
Thanks Mandy.
dl
On 12/17/18 2:55 PM, Mandy Chung wrote:
This looks okay to me.
Mandy
On 12/14/18 4:59 PM, dean.l...@oracle.com wrote:
https://bugs.openjdk.java.net/browse/JDK-8214583
http://cr.openjdk.java.net/~dlong/8214583/webrev
This change includes two new regression test that demonstr
David, can I list you as a reviewer?
dl
On 12/16/18 8:47 PM, dean.l...@oracle.com wrote:
On 12/16/18 7:39 PM, dean.l...@oracle.com wrote:
On 12/16/18 7:03 PM, David Holmes wrote:
On 17/12/2018 12:49 pm, dean.l...@oracle.com wrote:
On 12/16/18 4:06 PM, David Holmes wrote:
On 15/12/2018 10:59
Claes, can I list you as a reviewer?
dl
On 12/16/18 9:52 PM, Claes Redestad wrote:
Fair enough, I wasn't aware EA was looking beyond the inlined code like
this (which means it can't be "dead" or the JIT might see through the
trick at some point). I've skimmed the existing usages in the JDK and
On 19/12/2018 6:52 am, dean.l...@oracle.com wrote:
David, can I list you as a reviewer?
No, sorry, I only commented on the general issue.
David
dl
On 12/16/18 8:47 PM, dean.l...@oracle.com wrote:
On 12/16/18 7:39 PM, dean.l...@oracle.com wrote:
On 12/16/18 7:03 PM, David Holmes wrote:
On
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