[lworld+vector] Integrated: 8307715: Integrate VectorMask/Shuffle with value/primitive classes

[Xiaohong Gong]

On Tue, 16 May 2023 04:08:20 GMT, Xiaohong Gong <xgong at openjdk.org> wrote:

> This patch changes the Vector API java side and hotspot compiler code to make the `VectorMask` and `VectorShuffle` operations work well after integrating with valhalla value/primitive classes.
> 
> Java side changes include:
>  - Define the concrete `VectorMask/VectorShuffle `classes as value class.
>  - Define the payload field type as primitive classes, which defines `MultiField` annotated field to save the element values.
>  - Change all the relative API implementations, which use Unsafe APIs to access the new payload.
>  - Move several VectorMask default operations to the abstract super class.
>  - Minor code cleanup.
> 
> Compiler changes include:
>  - Enable intrinsification for `VectorMask/VectorShuffle` related operations.
>    Mask input/output of `VectorBox/VectorUnbox` is changed to the boolean vector format, to adapt C2's `InlineTypeNode`
>    and new `VectorBox` features. Note that the mask input/output is a normal vector or predicate before.
>  - Refine `VectorBox` expanding logic to make it right when the primitive payload instance is not flattened.
>  - Minor code cleanup.
> 
> Basic VectorMask/VectorShuffle jtreg tests pass with"`-XX:+UnlockExperimentalVMOptions -XX:-EnableVectorSupport`",
> and the basic unit tests work well after enabling vector support.

This pull request has now been integrated.

Changeset: 4ce98c10
Author:    Xiaohong Gong <xgong at openjdk.org>
Committer: Tobias Hartmann <thartmann at openjdk.org>
URL:       https://git.openjdk.org/valhalla/commit/4ce98c10963a989fd3ecb52ca346f479c0ae181a
Stats:     5514 lines in 54 files changed: 869 ins; 2556 del; 2089 mod

8307715: Integrate VectorMask/Shuffle with value/primitive classes

Reviewed-by: jbhateja

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PR: https://git.openjdk.org/valhalla/pull/845