On Tue, 11 Feb 2025 20:56:39 GMT, Coleen Phillimore <cole...@openjdk.org> wrote:
> Class.isInterface() can check modifier flags, Class.isArray() can check > whether component mirror is non-null and Class.isPrimitive() needs a new > final transient boolean in java.lang.Class that the JVM code initializes. > Tested with tier1-4 and performance tests. Touching `Wrapper` seems out of scope for this PR, but if `Class.isPrimitive` gets cheaper from this then `Wrapper.forPrimitiveType` should definitely be examined in a follow-up. ------------- PR Comment: https://git.openjdk.org/jdk/pull/23572#issuecomment-2661970849