Integrated: 8339131: Remove rarely-used accessor methods from Opcode

[Chen Liang]

On Wed, 28 Aug 2024 22:41:59 GMT, Chen Liang <liach at openjdk.org> wrote:

> In offline discussion, we agreed that current fields of `Opcode` violate data oriented design to a large extent. The attributes not generic to all opcode are removed.
> 
> Up for preliminary review; needs to be reworked for #20737.

This pull request has now been integrated.

Changeset: bd8569bc
Author:    Chen Liang <liach at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/bd8569bc6cc888cbf514e9329e2c24a059d89711
Stats:     469 lines in 8 files changed: 189 ins; 77 del; 203 mod

8339131: Remove rarely-used accessor methods from Opcode

Reviewed-by: asotona

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PR: https://git.openjdk.org/jdk/pull/20757