RFR: 8339783: Implementation of JEP 479: Remove the Windows 32-bit x86 Port [v4]

[Julian Waters]

On Tue, 29 Oct 2024 14:44:03 GMT, Magnus Ihse Bursie <ihse at openjdk.org> wrote:

>> I stand corrected: I forgot about Windows/ARM64. To correct myself: Due to a bug, this file, which is meant for Windows/x64, is used by Windows/ARM64 instead. The consequences of this are unknown
>
> What bug are you referring to that makes this file unused?

https://mail.openjdk.org/pipermail/hotspot-dev/2024-October/095864.html

This file isn't unused, I misspoke. Instead, it is meant as the implementation of frem and drem for Windows x64, but due to a bug, it's potentially being wrongly used as the implementation of frem and drem for Windows/ARM64 instead

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PR Review Comment: https://git.openjdk.org/jdk/pull/21744#discussion_r1820964150