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

[Aleksey Shipilev]

On Wed, 24 Aug 2022 19:23:29 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> I see that current weak CAS implementations in `macroAssembler_riscv.cpp` return `0` on success, and then invert it in `riscv.ad` to match the Java's `boolean` result. I think we can just return the final value from `MacroAssembler`.
> 
> Additional testing:
>  - [x] Linux RISC-V fastdebug `java/lang/invoke/VarHandles/`
>  - [x] Linux RISC-V fastdebug `compiler/unsafe`

This pull request has now been integrated.

Changeset: f57d3424
Author:    Aleksey Shipilev <shade at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/f57d34242c9b47936d137589fc75ab794d39a9d1
Stats:     39 lines in 2 files changed: 2 ins; 13 del; 24 mod

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

Reviewed-by: yadongwang, fyang

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PR: https://git.openjdk.org/jdk/pull/10006