RFR: 8305236: The LoadLoad barrier has been useless after JDK-8220051

Mon Apr 3 05:31:17 UTC 2023

On Thu, 30 Mar 2023 12:49:09 GMT, SUN Guoyun <duke at openjdk.org> wrote:

> After JDK-8220051, Interpreter::notice_safepoints() only be executed at a safe point, so LoadLoad barrier is useless.
> Barrier directives are generally time-consuming, so this patch removes LoadLoad be used for aarch64 and riscv.
> 
> Jtreg tier1-2 testing for aarch64 has been done.
> 
> Please help review it.
> 
> Thanks.

This should be reviewed by hotspot-runtime folks.

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PR Comment: https://git.openjdk.org/jdk/pull/13244#issuecomment-1493686563