RFR: JDK-8216437 : PPC64: Add intrinsic for GHASH algorithm [v15]

[Suchismith Roy]

On Tue, 28 Jan 2025 14:33:26 GMT, Suchismith Roy <sroy at openjdk.org> wrote:

>> JBS Issue : [JDK-8216437](https://bugs.openjdk.org/browse/JDK-8216437)
>> 
>> Currently acceleration code for GHASH is missing for PPC64. 
>> 
>> The current implementation utlilises SIMD instructions on Power and uses Karatsuba multiplication for obtaining the final result.
>
> Suchismith Roy has updated the pull request incrementally with one additional commit since the last revision:
> 
>   permute vHigh,vLow

==============================

   TEST                                              TOTAL  PASS  FAIL ERROR   
   jtreg:test/jdk/com/sun/crypto/provider/Cipher/AES/TestCopySafe.java
                                                         1     1     0     0   
==============================
TEST SUCCESS


==============================
Test summary
==============================
   TEST                                              TOTAL  PASS  FAIL ERROR   
   jtreg:test/hotspot/jtreg/compiler/codegen/aes/TestAESMain.java
                                                         1     1     0     0   
==============================
TEST SUCCESS


Hi @TheRealMDoerr  the above tests pass now. Tier-2 tests are going to take time. Would it be possible for you to check the tier-2 tests, in case it takes lesser time ?

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PR Comment: https://git.openjdk.org/jdk/pull/20235#issuecomment-2619277457