RFR: 8319822: Use a linear-time algorithm for assert_different_registers() [v12]

[Andrew Haley]

On Mon, 3 Jun 2024 17:31:55 GMT, Andrew Haley <aph at openjdk.org> wrote:

>> It doesn't, and I just saw the problem: on Arm, `Register` is a pointer type, whereas on other ports it's a class type.
>
> Looks like our comments crossed over. I'm building Zero and it's OK so far.

I guess Arm never got converted. That port needs some love.

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PR Review Comment: https://git.openjdk.org/jdk/pull/16617#discussion_r1624824601