RFR: 8280476: [macOS] : hotspot arm64 bug exposed by latest clang [v2]

[Kim Barrett]

On Thu, 3 Feb 2022 21:05:37 GMT, Daniel D. Daugherty <dcubed at openjdk.org> wrote:

>> A trivial fix to solve undefined behavior in src/hotspot/cpu/aarch64/immediate_aarch64.cpp:
>> replicate().
>> 
>> I was not able to reproduce the reported failure using:
>> 
>>   Xcode: Version 13.2.1 (13C100) which includes clang Apple LLVM 13.0.0 (clang-1300.0.29.30)
>> 
>> so I'm moving forward with the proposed fix from a code inspection
>> point of view.
>> 
>> I've tested this fix with Mach5 Tier[1-6]. Tier1 and Tier2 have completed with
>> no failures. Tier[3-6] are still running.
>
> Daniel D. Daugherty has updated the pull request incrementally with one additional commit since the last revision:
> 
>   kimbarrett and adinn CR changes

Looks good.

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Marked as reviewed by kbarrett (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/7270