[lworld] RFR: 8363846: [lworld] Make Class.isIdentityClass() non-native
Roger Riggs
rriggs at openjdk.org
Tue Jul 22 21:48:02 UTC 2025
On Tue, 22 Jul 2025 17:41:27 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:
> This moves isIdentityClass() implementation to Class.java, and checks within the JVM that is_identity_class() doesn't check the access flags for an ArrayKlass, since AccessFlags aren't initialized in ArrayKlasses. The AccessFlags should be moved from Klass.hpp to InstanceKlass.cpp in mainline but that's a more complicated change and has several pieces.
> Added a test.
> Tested with tier1 locally.
src/java.base/share/classes/java/lang/Class.java line 634:
> 632: } else {
> 633: return !isInterface();
> 634: }
Isn't this going to take a performance hit?
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PR Review Comment: https://git.openjdk.org/valhalla/pull/1514#discussion_r2223890013
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