RFR: 8312077: Fix signed integer overflow, final part [v7]

[Dean Long]

On Tue, 18 Jul 2023 01:01:22 GMT, Fei Yang <fyang at openjdk.org> wrote:

>> I couldn't see any s390-specific code change here. Still tested fastdebug & release builds. 
>> 
>> Looks Good.
>
>> @offamitkumar @TheRealMDoerr @RealFYang @bulasevich please check that I haven't broken the s390/ppc/riscv/arm32 ports.
> 
> FYI: Performed tier1, tier2 and tier3 tests on linux-riscv64 platform. Result is clean.

Thanks Vladimir, Andrew, @RealFYang and @offamitkumar.

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PR Comment: https://git.openjdk.org/jdk/pull/14883#issuecomment-1639281693