RFR: 8310126: C1: Missing receiver null check in Reference::get intrinsic

[Tobias Hartmann]

On Fri, 16 Jun 2023 09:28:38 GMT, Tobias Hartmann <thartmann at openjdk.org> wrote:

> We crash in C1 compiled code due a missing null check on the argument of the `Reference::get` method. The problem is that after [JDK-8201543](https://bugs.openjdk.org/browse/JDK-8201543), see [here](https://hg.openjdk.org/jdk/jdk/rev/4bb58f644e4e#l43.46), no `CodeEmitInfo` is passed to `access_load_at` and therefore no implicit null check is emitted.
> 
> Thanks,
> Tobias

Thanks, Aleksey! Yes, I also inspected the other places manually and couldn't find more issues.

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PR Comment: https://git.openjdk.org/jdk/pull/14511#issuecomment-1594459962