[CAUTION] RFR(S): 8245047: [PPC64] C2: ReverseBytes + Load always match to unordered Load (acquire semantics missing)

[Schmidt, Lutz]

Hi Martin, 

your change looks good to me. Thanks for digging into this and fixing the issue. 

Best,
Lutz

On 18.05.20, 16:03, "hotspot-compiler-dev on behalf of Doerr, Martin" <hotspot-compiler-dev-bounces at openjdk.java.net on behalf of martin.doerr at sap.com> wrote:

    Hi,

    this issue was previously discussed with the preliminary synopsis "RFR(S): 8245047: PPC64 fails jcstress Unsafe (?) memory ordering tests due to C2 (?) bug":
    http://mail.openjdk.java.net/pipermail/hotspot-compiler-dev/2020-May/038264.html

    Bug id and webrev are still the same:
    https://bugs.openjdk.java.net/browse/JDK-8245047
    http://cr.openjdk.java.net/~mdoerr/8245047_ppc64_load_reversed_acquire/webrev.00/

    Please send reviews replying to this RFR email.

    Best regards,
    Martin