RFR: 8319406: x86: Shorter movptr(reg, imm) for 32-bit immediates [v3]

[Aleksey Shipilev]

On Fri, 3 Nov 2023 19:49:55 GMT, Quan Anh Mai <qamai at openjdk.org> wrote:

>> Aleksey Shipilev has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Enlighs
>
> Can we create `MacroAssembler::mov64` that does the branching instead, I think it is more natural there. And things that need 8-byte immediates will call into `Assembler::mov64`.
> 
> Thanks.

I simplified the patch a bit, still looking for reviewers. @merykitty, does the new version look better to you?

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PR Comment: https://git.openjdk.org/jdk/pull/16497#issuecomment-1805519015