Re: [lworld] RFR: 8382701: [lworld] Decouple from the AlwaysAtomicAccesses flag

[Stefan Karlsson]

On Fri, 24 Apr 2026 14:14:33 GMT, Paul Hübner <phub...@openjdk.org> wrote:

> Hi all,
> 
> This decouples the `AlwaysAtomicAccesses` flag from layouts in Valhalla.
> 
> It also fixes a broken assertion that had gone unnoticed due to 
> `AlwaysAtomicAccesses` being falsy.
> 
> Testing: tiers 1-3. 
> 
> ---------
> - [x] I confirm that I make this contribution in accordance with the [OpenJDK 
> Interim AI Policy](https://openjdk.org/legal/ai).

src/hotspot/share/oops/flatArrayKlass.cpp line 107:

> 105:   assert(MultiArray_lock->holds_lock(THREAD), "must hold lock after 
> bootstrapping");
> 106:   assert(props.is_null_restricted() || !props.is_non_atomic(),
> 107:          "Null-restricted nonatomic arrays are unsupported");

Suggestion:

         "Null-restricted non-atomic arrays are unsupported");

-------------

PR Review Comment: 
https://git.openjdk.org/valhalla/pull/2366#discussion_r3154291966