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From: Alexey Dobriyan <>
To: Peter Zijlstra <>
Subject: Re: [PATCH] x86: drop REG_OUT macro from hweight functions
Date: Mon, 29 Jul 2019 23:44:17 +0300	[thread overview]
Message-ID: <20190729204417.GA2146@avx2> (raw)
In-Reply-To: <>

On Mon, Jul 29, 2019 at 12:04:47PM +0200, Peter Zijlstra wrote:
> +#define _ASM_ARG1B	__ASM_FORM_RAW(dil)
> +#define _ASM_ARG2B	__ASM_FORM_RAW(sil)
> +#define _ASM_ARG3B	__ASM_FORM_RAW(dl)
> +#define _ASM_ARG4B	__ASM_FORM_RAW(cl)
> +#define _ASM_ARG5B	__ASM_FORM_RAW(r8b)
> +#define _ASM_ARG6B	__ASM_FORM_RAW(r9b)

I preprocessed percpu code once to see what precisely it does because
it was easier than wading through forest of macroes.

Hopefully x86 assembly won't get to that level.

  reply	other threads:[~2019-07-29 20:44 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-28 11:51 Alexey Dobriyan
2019-07-29  9:43 ` Peter Zijlstra
2019-07-29 10:04   ` Peter Zijlstra
2019-07-29 20:44     ` Alexey Dobriyan [this message]
2019-07-30  8:08       ` Peter Zijlstra
2019-07-30 13:42         ` hpa

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