RFR: 8345678: compute_modifiers should not be in create_mirror

[Coleen Phillimore]

On Fri, 6 Dec 2024 22:00:14 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

> This moves the modifier_flag computation to when InstanceKlass, ObjArrayKlass and TypeArrayKlass are created.
> 
> Tested with jck:vm and tier1-4.

The JVM call is Class.getModifiers() and there are compiler intrinsics because I guess performance matters for this call.  Although maybe a future RFE could be to add this field to java.lang.Class and have the JVM set it instead and remove the intrinsic.

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PR Comment: https://git.openjdk.org/jdk/pull/22618#issuecomment-2527876290