RFR: 8302191: Performance degradation for float/double modulo on Linux

David Holmes dholmes at openjdk.org
Mon Feb 13 05:27:24 UTC 2023


On Fri, 10 Feb 2023 09:06:56 GMT, Jan Kratochvil <duke at openjdk.org> wrote:

> I have OCA already processed/approved. I am not Author but my Author request is being processed these days (sent to Rob McKenna).
> I did regression test x86_64 OpenJDK-8. I will leave other regression testing on GHA.
> The patch (and former GCC performance regression) affects only x86_64+i686.

The patch you link to:

https://gcc.gnu.org/pipermail/gcc-patches/2014-September/400104.html

seems to be i386 and FPU 387 specific. I can't see anything that suggests a more general impact of that patch to 64-bit x86 platform. ??

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PR: https://git.openjdk.org/jdk/pull/12508


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