RFR: 8283091: Support type conversion between different data sizes in SLP [v2]

[Fei Gao]

On Mon, 14 Mar 2022 09:00:13 GMT, Fei Gao <fgao at openjdk.org> wrote:

> Did you forget the micro-benchmark VectorLoop.java?

Thanks. Done.

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PR: https://git.openjdk.java.net/jdk/pull/7806