[lworld] RFR: 8377065: [lworld] Fix merge removing VM_Version::supports_fast_class_init_checks() check

[Dan Heidinga]

On Tue, 3 Feb 2026 12:57:01 GMT, Fei Yang <fyang at openjdk.org> wrote:

> Hi,
> 
> Please consider this small change fixing a minor issue in latest merge.
> 
> The original issue is: https://bugs.openjdk.org/browse/JDK-8370112.
> After the latest merge, there is still one runtime check for `VM_Version::supports_fast_class_init_checks()` left in both x86 and aarch64 platform specific code. We should replace them with asserts for consistency with other places.
> 
> Verified by running `hotspot_valhalla` and `jdk_valhalla` on these two platforms.

Looks good

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Marked as reviewed by heidinga (no project role).

PR Review: https://git.openjdk.org/valhalla/pull/2020#pullrequestreview-3773856446