RFR: 8302191: Performance degradation for float/double modulo on Linux [v5]

[Joe Darcy]

On Wed, 1 Mar 2023 12:03:54 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.
>
> Jan Kratochvil has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fix copyright author.

src/hotspot/cpu/x86/sharedRuntime_x86.cpp line 129:

> 127: // GCC had slow fmod():
> 128: // since https://gcc.gnu.org/git/gitweb.cgi?p=gcc.git;h=4f2611b6e872c40e0bf4da38ff05df8c8fe0ee64
> 129: // until https://gcc.gnu.org/git/gitweb.cgi?p=gcc.git;h=8020c9c42349f51f75239b9d35a2be41848a97bd

We typically list such URLs in the bug database rather than the source code.

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