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Re: [PATCH 02/17] bitops: Add generic parity calculation for u64

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To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Subject: Re: [PATCH 02/17] bitops: Add generic parity calculation for u64
From: "H. Peter Anvin" <hpa@xxxxxxxxx>
Date: Tue, 25 Feb 2025 17:35:26 -0800
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In-reply-to: <8052b316-9f72-42c7-9e11-e23e690d80c4@citrix.com>
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On February 25, 2025 1:43:27 PM PST, Andrew Cooper <andrew.cooper3@xxxxxxxxxx> wrote:
>> Incidentally, in all of this, didn't anyone notice __builtin_parity()?
>
>Yes.  It it has done sane for a decade on x86, yet does things such as
>emitting a library call on other architectures.
>
>https://godbolt.org/z/6qG3noebq
>
>~Andrew

And not even a smart one at that.

References:
- Re: [PATCH 02/17] bitops: Add generic parity calculation for u64
  - From: H. Peter Anvin
- Re: [PATCH 02/17] bitops: Add generic parity calculation for u64
  - From: Andrew Cooper

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