[Bug 1932010] patch

[bugproxy]

------- Comment on attachment From iii at de.ibm.com 2021-08-10 17:47 EDT-------


Argh, I haven't noticed this ticket and made a backport on my own a week ago. I'm attaching my patch here just for reference and will give yours a try tomorrow.

** Attachment added: "patch"
   https://bugs.launchpad.net/bugs/1932010/+attachment/5517176/+files/0001-s390x-vectorize-crc32.patch

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https://bugs.launchpad.net/bugs/1932010

Title:
  [21.10 FEAT] zlib CRC32 optimization for s390x

Status in Ubuntu on IBM z Systems:
  In Progress
Status in zlib package in Ubuntu:
  In Progress

Bug description:
  Use SIMD instructions to accelerate the zlib CRC32 implementation.
  Business value: Performance improvement in database area

  The zlib CRC32 optimization for IBM Z is currently being discussed for inclusion into zlib-ng:
  https://github.com/zlib-ng/zlib-ng/pull/912

  The patch for zlib will be based on that.

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