RFR: 8223347: Integration of Vector API (Incubator) [v4]

[Ekaterina Pavlova]

On Mon, 12 Oct 2020 12:56:10 GMT, Erik Joelsson <erikj at openjdk.org> wrote:

>> Paul Sandoz has updated the pull request with a new target base due to a merge or a rebase. The pull request now
>> contains ten commits:
>>  - Merge master
>>  - Fix related to merge
>>  - HotspotIntrinsicCandidate to IntrinsicCandidate
>>  - Merge master
>>  - Fix permissions
>>  - Fix permissions
>>  - Merge master
>>  - Vector API new files
>>  - Integration of Vector API (Incubator)
>
> Build changes look good.

There are several gc tests crashed in panama-vector tier3 testing which seems are not observed in openjdk repo.
The crashes look like:
#  assert(oopDesc::is_oop(obj)) failed: not an oop: 0xfffffffffffffff1
#
# JRE version: Java(TM) SE Runtime Environment (16.0+3) (fastdebug build 16-panama+3-216)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (fastdebug 16-panama+3-216, mixed mode, sharing, tiered, compressed oops,
g1 gc, linux-amd64) # Problematic frame:
# V  [libjvm.so+0xd8ef94]  HandleArea::allocate_handle(oop)+0x144

and the issue is actually tracked by JDK-8233199.

This issue needs to be at least analyzed before integrating Vector API.

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PR: https://git.openjdk.java.net/jdk/pull/367