RFR: 8266822: Rename MetaspaceShared::is_old_class to has_old_class_version

[Ioi Lam]

On Tue, 11 May 2021 16:15:08 GMT, Calvin Cheung <ccheung at openjdk.org> wrote:

> Please review this simple patch for renaming the function from `MetaspaceShared::is_old_class` to `MetaspaceShared::has_old_class_version`. Also added some comment to the function.
> 
> Tests:
> - [x] tier1, 2

Looks good an trivial. Just a small nit for the comment text.

src/hotspot/share/cds/metaspaceShared.cpp line 577:

> 575: };
> 576: 
> 577: // Check if a class or its super class/interface has a version older than 50.

How about "Check if a class or any of its supertypes has ...."

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Marked as reviewed by iklam (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/3983