RFR: 8310939: [c1] The visibility of write-volatile requires membar_volatile instead of membar
Leslie Zhai
lzhai at openjdk.org
Wed Jul 19 03:09:40 UTC 2023
On Tue, 27 Jun 2023 12:46:14 GMT, SUN Guoyun <duke at openjdk.org> wrote:
> For c1 now, a volatile write case:
>
> membar_release // LoadStore | StoreStore
> write volatile
> membar
>
> Just like c2, here `membar` should be defined `membar_volatile` clearly, then for risc-v, ppc and loongarch can use StoreLoad for `membar_volatile` for better performance.
>
> Testing:
> GHA testing
> jtreg tier1-3 for loongarch64
PING
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PR Comment: https://git.openjdk.org/jdk/pull/14677#issuecomment-1641314769
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