RFR: 8330388: Remove invokedynamic cache index encoding

[Doug Simon]

On Wed, 17 Apr 2024 22:58:21 GMT, Dean Long <dlong at openjdk.org> wrote:

> @dougxc should check JVMCI changes.

Thanks for the heads up. I've asked @matias9927 to double check these changes against libgraal which should address any concerns about how this change impacts Graal.

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PR Comment: https://git.openjdk.org/jdk/pull/18819#issuecomment-2063308834