JEP proposed to target JDK 20: 438: Vector API (Fifth Incubator)

Mark Reinhold mark.reinhold at oracle.com
Wed Mar 1 00:31:13 UTC 2023


The following JEP is proposed to target JDK 20:

  438: Vector API (Fifth Incubator)
       https://openjdk.org/jeps/438

  Summary: Introduce an API to express vector computations that reliably
  compile at runtime to optimal vector instructions on supported CPU
  architectures, thus achieving performance superior to equivalent scalar
  computations.

Feedback on this proposal from JDK Project Committers and Reviewers [1]
is more than welcome, as are reasoned objections.  If no such objections
are raised by 23:59 UTC on Wednesday, 8 March, or if they’re raised and
then satisfactorily answered, then per the JEP 2.0 process proposal [2]
I’ll target this JEP to JDK 20.

As noted previously [3], this JEP is being run through the process
retroactively due to a misunderstanding on the part of the owner.

- Mark


[1] https://openjdk.org/census#jdk
[2] https://cr.openjdk.java.net/~mr/jep/jep-2.0-02.html
[3] https://mail.openjdk.org/pipermail/jdk-dev/2023-February/007389.html


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