AArch64 LLVM Sync-up Call 7 May 2024

Code Generation AArch64
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Tomorrow, Tuesday the 7th of May, there’s a AArch64 Sync-up call at 4PM GMT / 8AM PST.

Please share any topics, agenda items, or patches that you would like to discuss here in the comments, or just bring them up in the meeting.

About the AArch64 LLVM Sync-up Calls

We have a call every month to coordinate between contributors aiming to improve or enable AArch64 code-generation.

Dial-in details:
Google Meet: https://meet.google.com/hqk-runc-agf

Attendees are required to adhere to the LLVM Code of Conduct (LLVM Community Code of Conduct — LLVM 18.0.0git documentation ). For any Code of Conduct reports, please contact the organizers, and also email conduct@llvm.org.

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I’d like to discuss the current state of the histogram vectorization patches and early-exit vectorization work.

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I’d like to ask about plans for GlobalISel adoption.

I and my colleagues are pushing patches to add support in the GlobalISel but I would like to make sure it aligns with our plans (if any).

Apologies for the short notice.

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Can I share my progress for MachinePipeliner in writing as I was not able to get into the meeting?

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Sorry that you couldn’t join @ytmukai. Was that a problem at your end? Or did I miss your request to join somehow?

Thanks for your MachinePipeliner update!

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Here’s a quick and incomplete summary of the things we have talked about:

  • @graham.hunter talked about histogram vectorisation. The patch has been approved, but would welcome any other feedback.
  • @david-arm talked about early-exit loop vectorisation and his patch in review here.
  • @madhur13490 talked about GISel and support for SVE. @davemgreen pointed out this patch would be as a good start for adding SVE support.
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Thank you for the reply, I clicked the join request button a little after 4PM GMT and the screen didn’t change from there. If I can’t get in again next time, I’ll contact you here soon and I’d appreciate it if you could check.