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[bug#53895] [PATCH 0/5] More CPU detection
From: |
Efraim Flashner |
Subject: |
[bug#53895] [PATCH 0/5] More CPU detection |
Date: |
Wed, 9 Feb 2022 13:41:40 +0200 |
On Wed, Feb 09, 2022 at 11:43:21AM +0100, Ludovic Courtès wrote:
> Efraim Flashner <efraim@flashner.co.il> skribis:
>
> > + (letrec-syntax ((if-flags (syntax-rules (=>)
> > + ((_)
> > + #f)
> > + ((_ (flags ... => name) rest ...)
> > + (if (every (lambda (flag)
> > + (set-contains?
> > (cpu-flags cpu)
> > +
> > flag))
> > + '(flags ...))
> > + name
> > + (if-flags rest ...))))))
> > +
> > + (when (= 22 (cpu-family cpu))
> > + (if-flags ("movbe" => "btver2")))
> > + (when (= 6 (cpu-family cpu))
> > + (if-flags ("3dnowp" => "athalon")))
>
> This has no effect (because ‘if-flags’ returns a value that is ignored
> since it’s not returned.)
>
> What we could do is extend ‘if-flags’ so that it can optionally check
> for a family number:
>
> (if-flags ((family 22) "movbe" => "btver2")
> …)
Another option would be to just move it to the bottom of the if-flags so
it should take effect then.
--
Efraim Flashner <efraim@flashner.co.il> רנשלפ םירפא
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[bug#53895] [PATCH 4/5] gnu: gcc: Add compiler-cpu-architectures for armhf., Efraim Flashner, 2022/02/09
[bug#53895] [PATCH 5/5] WIP: guix: cpu: Add detection for aarch64 CPUs., Efraim Flashner, 2022/02/09