[riscv-port-jdk17u:riscv-port] Integrated: 8292867: RISC-V: Simplify weak CAS return value handling

[Dingli Zhang]

On Sat, 15 Apr 2023 16:26:27 GMT, Dingli Zhang <dzhang at openjdk.org> wrote:

> Please review this backport to riscv-port-jdk17u.
> Backport of [JDK-8292867](https://bugs.openjdk.org/browse/JDK-8292867). Applies cleanly.
> 
> Testing:
> 
> - Tier1-3 passed without new failure on unmacthed (release).

This pull request has now been integrated.

Changeset: b934d814
Author:    Dingli Zhang <dzhang at openjdk.org>
Committer: Fei Yang <fyang at openjdk.org>
URL:       https://git.openjdk.org/riscv-port-jdk17u/commit/b934d81464b0f74ce12835c4040c9bf38ca2aa80
Stats:     39 lines in 2 files changed: 2 ins; 13 del; 24 mod

8292867: RISC-V: Simplify weak CAS return value handling

Reviewed-by: fyang
Backport-of: f57d34242c9b47936d137589fc75ab794d39a9d1

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PR: https://git.openjdk.org/riscv-port-jdk17u/pull/43