RFR: 8358556: Assert when running with -XX:-UseLibmIntrinsic [v6]

[Sandhya Viswanathan]

On Tue, 10 Jun 2025 00:53:23 GMT, Mohamed Issa <duke at openjdk.org> wrote:

>> This change fixes unwanted calls to the cbrt and tanh intrinsics on x86 when they are explicitly disabled by flags such as _-XX:-UseLibmIntrinsic_ or _-XX:-InlineIntrinsics_.
>
> Mohamed Issa has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Add guard preprocessors to ensure HotSpot Zero JVM builds don't fail

Changes look good.

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Marked as reviewed by sviswanathan (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/25680#pullrequestreview-2914172623