RFR: 8349860: Make Class.isArray(), Class.isInterface() and Class.isPrimitive() non-native [v5]

[Vladimir Ivanov]

On Thu, 20 Feb 2025 20:19:15 GMT, Coleen Phillimore <coleenp at 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

Looks good!

Regarding @IntrinsicCandidate and its effects on JIT-compiler inlining decisions, @ForceInline could be added, but IMO it's not necessary since new implementations are small.

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Marked as reviewed by vlivanov (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/23572#pullrequestreview-2631244815