[jdk17u-dev] Integrated: 8268276: Base64 Decoding optimization for x86 using AVX-512

[Scott Gibbons]

On Tue, 8 Nov 2022 01:18:18 GMT, Scott Gibbons <duke at openjdk.org> wrote:

> This is a backport of JDK-8268276: Base64 Decoding optimization for x86 using AVX-512.  Backport is clean.
> 
> We have had numerous customer requests for this functionality to be backported due to the ~19x performance improvement.
> 
> There will be four additional PRs for which this is a dependency: #861 #862 #863 #864 
> 
> Risk: I view the risk of this backport to be minimal. This code has been in use for many months with no bugs reported.
> 
> Testing: x86_64 build, affected tests, tier1
> 
> Thanks,
> --Scott

This pull request has now been integrated.

Changeset: 07050b00
Author:    Scott Gibbons <scott.gibbons at intel.com>
Committer: Derek White <drwhite at openjdk.org>
URL:       https://git.openjdk.org/jdk17u-dev/commit/07050b000ce20350c55505fbc5595c0b6c3052b5
Stats:     753 lines in 12 files changed: 735 ins; 4 del; 14 mod

8268276: Base64 Decoding optimization for x86 using AVX-512

Co-authored-by: Derek White <drwhite at openjdk.org>
Co-authored-by: Sandhya Viswanathan <sviswanathan at openjdk.org>
Backport-of: c37988d0793b24d98d285530dfda69999a227937

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PR: https://git.openjdk.org/jdk17u-dev/pull/860