RFR: 8333382: [s390x] Enhance popcnt Instruction to use Z15 facilities [v2]

[Amit Kumar]

On Fri, 7 Jun 2024 14:04:56 GMT, Lutz Schmidt <lucy at openjdk.org> wrote:

>> I can add assert. But there is already one assert to check this in `macroAssembler_s390.cpp` file. Do you want one more here as well ?
>
> Ahhh sorry. Did not cross-check. It is OK then.

Done :-)

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PR Review Comment: https://git.openjdk.org/jdk/pull/19509#discussion_r1631304743