[jdk21u] RFR: 8313402: C1: Incorrect LoadIndexed value numbering

[Aleksey Shipilev]

On Thu, 3 Aug 2023 09:32:59 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Clean backport to fix the important C1 bug.
> 
> Additional testing:
>  - [x] New regression test fails without the patch, passes with it
>  - [x] Linux AArch64 `fastdebug` `tier1 tier2 tier3`

Reviews are here, testing is clean, GHA failures are infra issues. Push approval is here.

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PR Comment: https://git.openjdk.org/jdk21u/pull/37#issuecomment-1670885029