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

[Julian Waters]

On Tue, 29 Oct 2024 09:32:21 GMT, David Holmes <dholmes at openjdk.org> wrote:

>> This is the implementation of [JEP 479: _Remove the Windows 32-bit x86 Port_](https://openjdk.org/jeps/479).
>> 
>> This is the summary of JEP 479:
>>> Remove the source code and build support for the Windows 32-bit x86 port. This port was [deprecated for removal in JDK 21](https://openjdk.org/jeps/449) with the express intent to remove it in a future release.
>
> src/hotspot/share/prims/jvm.cpp line 381:
> 
>> 379:   {
>> 380: #undef CSIZE
>> 381: #if defined(_LP64)
> 
> Windows is actually LLP64 programming model not LP64. Does Windows x64 define _LP64 or is that something we do in our build?

It's something we do in our build. For us, _LP64 really means 64 bit

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PR Review Comment: https://git.openjdk.org/jdk/pull/21744#discussion_r1820464097