RFR: 8319822: Use a linear-time algorithm for assert_different_registers() [v6]

[Andrew Haley]

On Tue, 16 Jan 2024 18:07:38 GMT, Emanuel Peter <epeter at openjdk.org> wrote:

> Just a code-style review.
> 
> Question: could there be some sort of regression test for this, with different examples and edge cases?

I have no idea, really. assert_different_registers is used all over the place, and I'm going for bootcycle and tier1.

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PR Comment: https://git.openjdk.org/jdk/pull/16617#issuecomment-2142649991