RFR: 8371161: [AArch64] Enable CPU feature UseSHA3Intrinsics for the Qualcomm processor family [v2]

Wed Nov 12 14:22:36 UTC 2025

On Tue, 11 Nov 2025 18:11:20 GMT, Dhamoder Nalla <dhanalla at openjdk.org> wrote:

>> This PR makes two targeted AArch64 updates specific to Qualcomm silicon:
>> 
>> 1. Corrects the CPU family enum name typo from CPU_QUALCOM to CPU_QUALCOMM.
>> 2. Enables UseSHA3Intrinsics for Qualcomm (CPU_QUALCOMM) in addition to Apple (CPU_APPLE), allowing Qualcomm-based systems to use hardware-optimized SHA‑3 implementations.
>> 
>> Performance testing:
>> The JMH test case MessageDigests.java is used to evaluate the performance improvements enabled by UseSHA3Intrinsics on Qualcomm CPUs.
>> 
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>> Benchmark | (digesterName) | (length) | (provider) | Mode | Cnt | Score - Before change| Error | Score After change | Error | Units | SHA3   Perf Improvement
>> -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
>> MessageDigests.digest | SHA3-256 | 64 | DEFAULT | thrpt | 15 | 4363.650 | ±682.413 | 5687.798 | ±855.826 | ops/ms | 30.34%
>> MessageDigests.digest | SHA3-256 | 16384 | DEFAULT | thrpt | 15 | 45.794 | ±0.069 | 58.735 | ±0.077 | ops/ms | 28.26%
>> MessageDigests.digest | SHA3-512 | 64 | DEFAULT | thrpt | 15 | 4008.741 | ±703.879 | 5145.512 | ±866.479 | ops/ms | 28.36%
>> MessageDigests.digest | SHA3-512 | 16384 | DEFAULT | thrpt | 15 | 23.991 | ±0.032 | 30.294 | ±0.040 | ops/ms | 26.27%
>> MessageDigests.getAndDigest | SHA3-256 | 64 | DEFAULT | thrpt | 15 | 1995.297 | ±396.007 | 2021.385 | ±486.581 | ops/ms | 1.31%
>> MessageDigests.getAndDigest | SHA3-256 | 16384 | DEFAULT | thrpt | 15 | 45.994 | ±0.051 | 58.283 | ±0.095 | ops/ms | 26.72%
>> MessageDigests.getAndDigest | SHA3-512 | 64 | DEFAULT | thrpt | 15 | 1889.550 | ±355.058 | 2173.164 | ±437.968 | ops/ms | 15.01%
>> MessageDigests.getAndDigest | SHA3-512 | 16384 | DEFAULT | thrpt | 15 | 24.411 | ±0.143 | 30.187 | ±0.035 | ops/ms | 23.66%
>> 
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>
> Dhamoder Nalla has updated the pull request incrementally with two additional commits since the last revision:
> 
>  - [AArch64] Enable CPU feature UseSHA3Intrinsics for the Qualcomm processor family
>  - [AArch64] Enable CPU feature UseSHA3Intrinsics for the Qualcomm processor family

Marked as reviewed by aph (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/28166#pullrequestreview-3453693100