[jdk21u] Integrated: 8303737: C2: Load can bypass subtype check that enforces it's from the right object type

Wed Nov 1 14:11:12 UTC 2023

On Wed, 25 Oct 2023 10:11:00 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Clean backport to fix old C2 bug.
> 
> Additional testing:
>  - [x] New tests fail without the patch, pass with it
>  - [x] Linux aarch64 server fastdebug, `tier1 tier2 tier3`

This pull request has now been integrated.

Changeset: c3c2b9f4
Author:    Aleksey Shipilev <shade at openjdk.org>
URL:       https://git.openjdk.org/jdk21u/commit/c3c2b9f42d2b1f59f72b96ae3bb292eb8457ab1f
Stats:     499 lines in 8 files changed: 450 ins; 3 del; 46 mod

8303737: C2: Load can bypass subtype check that enforces it's from the right object type

Backport-of: 52983ed529182901db4e33857bfeab2727e235df

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PR: https://git.openjdk.org/jdk21u/pull/291