RFR: 8302850: Implement C1 clone intrinsic that reuses arraycopy code for primitive arrays [v10]

[Galder Zamarreño]

On Fri, 19 Apr 2024 05:31:40 GMT, Boris Ulasevich <bulasevich at openjdk.org> wrote:

> There are stylistic questions to this block
...
> Comment about phi does not make things clear: not evident why receiver type can be nullptr and why it is phi. After all, why can't we check src->exact_type()->as_array_klass()->element_type() here?

This block comes from @dean-long, I'll let him comment.

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PR Review Comment: https://git.openjdk.org/jdk/pull/17667#discussion_r1571973470