RFR: 8249893: AARCH64: optimize the construction of the value from the bits of the other two

[Boris Ulasevich]

On Sun, 11 Oct 2020 15:07:54 GMT, Andrew Haley <aph at openjdk.org> wrote:

> I've often seen ((a & 0xff) << 8) + (b & 0xff)
Good idea. I will add AddI -> OrI transformation for the case.

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PR: https://git.openjdk.java.net/jdk/pull/511