RFR: 8346288: WB_IsIntrinsicAvailable fails if called with wrong compilation level

[Vladimir Kozlov]

On Thu, 19 Dec 2024 07:25:15 GMT, Daniel Skantz <dskantz at openjdk.org> wrote:

> Fixes crashes when calling isIntrinsicAvailable with an incorrect compilation level or incompatible VM flag values.
> 
> Testing: T1-3.
> Extra testing: called isIntrinsicAvailable with compLevel={-2, -1, ..., 5) without extra flags, and with -XX:-TieredCompilation -XX:TieredStopAtLevel={0, 1, ..., 4} and observed no crashes after the fix.

Looks good.

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Marked as reviewed by kvn (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/22823#pullrequestreview-2516092478