[vectorIntrinsics] RFR: 8281562:[vectorapi] Add support for popcount operation

[Jatin Bhateja]

On Wed, 9 Feb 2022 22:41:36 GMT, Smita Kamath <svkamath at openjdk.org> wrote:

> 8281562:[vectorapi] Add support for popcount operation

src/hotspot/share/prims/vectorSupport.cpp line 487:

> 485:         case T_SHORT: // fall-through
> 486:         case T_INT:   return Op_PopCountI;
> 487:         case T_LONG:  return Op_PopCountL;

default case missing, will cause compilation failure.

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PR: https://git.openjdk.java.net/panama-vector/pull/173