Bug ID: JDK-8165381 Update for x86 SHA512 using AVX2

JDK-8165381 : Update for x86 SHA512 using AVX2

Type: Enhancement
Component: hotspot
Sub-Component: compiler
Affected Version: 9

Priority: P4
Status: Resolved
Resolution: Fixed
CPU: x86

Submitted: 2016-09-02
Updated: 2019-03-05
Resolved: 2016-10-21

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JDK 9
9 b146Fixed

Related Reports

Duplicate :	JDK-8165379 - Update for x86 SHA512 using AVX2
Relates :	JDK-8220198 - Lots of com/sun/crypto/provider/Cipher tests fail on x86_32 due to missing SHA512 stubs
Relates :	JDK-8194494 - SHA-512 stub uses AVX 2 instructions on non-supporting CPUs
Relates :	JDK-8211061 - Tests fail with assert(VM_Version::supports_sse4_1()) on ThreadRipper CPU
Relates :	JDK-8165404 - AArch64: Implement SHA512 accelerator/intrinsic

Description

We would like to contribute the SHA512 AVX2 intrinsic. 

This instrinsic is for x86 AVX2 architecture with no supports_sha() available.

The patch delivers 2x performance gain for the latency and throughput - both are measured on an average message. 

Contributor: Smita Kamath (smita.kamath@intel.com)

Comments

Latest webrev is: http://cr.openjdk.java.net/~mcberg/8165381/webrev.01/

20-10-2016

FC Extension Request Justification: The change is not large, is platform dependent and this addition offers 2x performance gain for the latency and throughput - both are measured on an average message. Risk: Low Proposed Integration Date: 10-15-16 Remaining work: 2d

07-10-2016

Webrev: http://cr.openjdk.java.net/~vdeshpande/8165381/webrev.00/

02-09-2016