Problems with AES-GCM native acceleration

Andrew Haley aph at
Wed Nov 21 17:37:05 UTC 2018

On 11/15/18 10:42 AM, Gidon Gershinsky wrote:
> Having the decryption optimized in the HotSpot engine would be ideal.

I agree with you. I did a few experiments, and it can take a very
long time for C2 compilation to kick in, especially because GCM is
glacially slow until the intrinsics are used.

I think this would be a generally useful enhancement to HotSpot,
and I'm kicking around an experimental patch which adds the
intrinsics to c1 and the interpreter.

Andrew Haley
Java Platform Lead Engineer
Red Hat UK Ltd. <>
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