> Hi all,
>
> Vector API fails to work when:
> - case 1: MaxVectorSize is set to <=8, or
> - case 2: C2 is disabled
>
> The reason is that {max/preferred} VectorShape initialization fails in both
> cases.
> And the root cause is that VectorSupport_GetMaxLaneCount [1] returns
> unreasonable values (0 for case 1 and -1 for case 2).
>
> Vector API should not depend on C2 to run.
> It should work even there is no JIT compiler since it's a Java-level api.
> So let's fix it.
>
> Testing:
> - jdk/incubator/vector with -XX:MaxVectorSize=default/8 on Linux/x64
>
> Thanks.
> Best regards,
> Jie
>
> [1]
> https://github.com/openjdk/jdk/blob/master/src/hotspot/share/prims/vectorSupport.cpp#L364
Jie Fu has updated the pull request incrementally with one additional commit
since the last revision:
Add requires vm.compiler2.enabled
-------------
Changes:
- all: https://git.openjdk.java.net/jdk/pull/2722/files
- new: https://git.openjdk.java.net/jdk/pull/2722/files/b67b232d..79402411
Webrevs:
- full: https://webrevs.openjdk.java.net/?repo=jdk&pr=2722&range=05
- incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=2722&range=04-05
Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
Patch: https://git.openjdk.java.net/jdk/pull/2722.diff
Fetch: git fetch https://git.openjdk.java.net/jdk pull/2722/head:pull/2722
PR: https://git.openjdk.java.net/jdk/pull/2722
