JDK-8292894 : AArch64: Enable SHA3 intrinsic by default on supported hardware
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: 20
  • Priority: P4
  • Status: Open
  • Resolution: Unresolved
  • CPU: aarch64
  • Submitted: 2022-08-25
  • Updated: 2022-11-02
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tbdUnresolved
Related Reports
Blocks :  
JDK-8295698 - AArch64: test/jdk/sun/security/ec/ed/EdDSATest.java failed with -XX:+UseSHA3Intrinsics
Relates :  
JDK-8252204 - AArch64: Implement SHA3 accelerator/intrinsic
Description
Currently UseSHA3Intrinsics is disabled by default. See https://github.com/openjdk/jdk/blob/master/src/hotspot/cpu/aarch64/vm_version_aarch64.cpp#L338.

As a result, test/hotspot/jtreg/compiler/intrinsics/sha/cli/TestUseSHA3IntrinsicsOptionOnSupportedCPU.java failed on the sha3 supported hardware.

We may need to enable it on supported hardware.
Comments
We have to evaluate the correctness and performance before we set sha3 intrinsic as auto-enabled on real hardware. 1) Correctness JDK-8295698 addressed one JTREG failure. Hence, tier1~tier3 can pass now. 2) Performance As discussed in JDK-8295698, there exists performance regression on some hardware. Note that we use JMH, i.e. MessageDigests.java case.
02-11-2022
I'd like to handle SHA512 intrinsics in JDK-8293484 separately. The title of this JBS is updated to "AArch64: Enable SHA3 intrinsics on supported hardware"
28-10-2022