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

Mon Feb 13 05:37:27 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.

GCC has both 32-bit and 64-bit x86-64 (incl. third x32 which is a 32-bit x86_64) in a single directory `gcc/config/i386`: https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=gcc/config/i386/t-linux64;hb=HEAD
Also I was verifying the GCC behavior only on x86-64 by reverting/applying [that patch](https://gcc.gnu.org/pipermail/gcc-patches/2014-September/400104.html).

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