[vectorIntrinsics] RFR: 8274631: assert(false) failed: bad AD file with -XX:UseKNLSetting [v2]

[Ningsheng Jian]

On Mon, 11 Oct 2021 05:26:48 GMT, Jatin Bhateja <jbhateja at openjdk.org> wrote:

>> src/hotspot/share/opto/vectorIntrinsics.cpp line 2417:
>> 
>>> 2415:   // through a vector or predicate register.
>>> 2416:   if (is_mask &&
>>> 2417:       ((src_type->isa_vect() && dst_type->isa_vectmask()) ||
>> 
>> Unfortunately, this will block all vectmask cast operations, since currently a vectmask type is also a vect type. @jatin-bhateja
>
> Thanks, yes it was a typo, check should be  following:-
> 
> +      ((src_type->isa_vectmask() == NULL && dst_type->isa_vectmask()) ||
> +      (dst_type->isa_vectmask() == NULL && src_type->isa_vectmask()))) {
> 
> @nsjian can you file a bug a propose a fix on above line.

I created JDK-8275025 with the simple fix, but I am not able to verify that on x86. Please have a check: https://github.com/openjdk/panama-vector/pull/151

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PR: https://git.openjdk.java.net/panama-vector/pull/141