On Thu, 20 Feb 2025 20:19:15 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.
>
> Coleen Phillimore has updated the pull request incrementally with one 
> additional commit since the last revision:
> 
>   Fix whitespace

You are right, using the field directly is indeed better.

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PR Review Comment: https://git.openjdk.org/jdk/pull/23572#discussion_r1964502825

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