> 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
- [PATCH 06/17] media: saa7115: Replace open-coded parity cal... Kuan-Wei Chiu
- [PATCH 14/17] fsi: i2cr: Replace open-coded parity calculat... Kuan-Wei Chiu
- [PATCH 16/17] Input: joystick - Replace open-coded parity c... Kuan-Wei Chiu
- [PATCH 12/17] drm/bridge: dw-hdmi: Replace open-coded parit... Kuan-Wei Chiu
- [PATCH 02/17] bitops: Add generic parity calculation for u6... Kuan-Wei Chiu
- Re: [PATCH 02/17] bitops: Add generic parity calculati... Jiri Slaby
- Re: [PATCH 02/17] bitops: Add generic parity calcu... David Laight
- Re: [PATCH 02/17] bitops: Add generic parity c... Yu-Chun Lin
- Re: [PATCH 02/17] bitops: Add generic parity c... H. Peter Anvin
- Re: [PATCH 02/17] bitops: Add generic parity c... H. Peter Anvin
- Re: [PATCH 02/17] bitops: Add generic pari... Andrew Cooper
- Re: [PATCH 02/17] bitops: Add generic... H. Peter Anvin
- Re: [PATCH 02/17] bitops: Add generic parity calculati... Yury Norov
- Re: [PATCH 02/17] bitops: Add generic parity calcu... Kuan-Wei Chiu
- Re: [PATCH 02/17] bitops: Add generic parity c... Kuan-Wei Chiu
- Re: [PATCH 02/17] bitops: Add generic parity c... Jiri Slaby
- Re: [PATCH 02/17] bitops: Add generic pari... Kuan-Wei Chiu
- Re: [PATCH 02/17] bitops: Add generic pari... Yury Norov
- Re: [PATCH 02/17] bitops: Add generic... Jiri Slaby
- Re: [PATCH 02/17] bitops: Add gen... Yury Norov
- Re: [PATCH 02/17] bitops: Add generic parity calcu... David Laight
