RFR: 8331733: [PPC64] saving and restoring CR is not needed at most places [v5]

[Amit Kumar]

On Thu, 6 Jun 2024 11:24:02 GMT, Varada M <varadam at openjdk.org> wrote:

>> PPC64 uses save/restore CR less often. Only LR is critical, CR is mainly needed for native-to-Java calls.
>> Fastdebug: build and tier1 testing successful. [unrelated failures]
>
> Varada M has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains seven additional commits since the last revision:
> 
>  - Merge branch 'master' into LR
>  - [PPC64] saving and restoring CR is not needed at most places
>  - [PPC64] saving and restoring CR is not needed at most places
>  - [PPC64] saving and restoring CR is not needed at most places
>  - [PPC64] saving and restoring CR is not needed at most places
>  - [PPC64] saving and restoring CR is not needed at most places
>  - [PPC64] saving and restoring CR is not needed at most places

Looks good to me. 

I ran tier1 & vector test on `ppc-le` and these are the results: 

failures in tier1 (looks unrelated to this PR): 
gtest/GTestWrapper.java 
java/util/ResourceBundle/Control/MissingResourceCauseTestRun.java 
jdk/javadoc/doclet/testIOException/TestIOException.java 




Vector tests: 

Test summary
==============================
   TEST                                              TOTAL  PASS  FAIL ERROR   
   jtreg:./test/jdk/jdk/incubator/vector                78    78     0     0   
==============================
TEST SUCCESS
``

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Marked as reviewed by amitkumar (Committer).

PR Review: https://git.openjdk.org/jdk/pull/19494#pullrequestreview-2101765929