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Bill Allombert on Fri, 20 Sep 2024 09:40:58 +0200
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Re: Wrong x86 assembler in the kernel
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- To: pari-dev@pari.math.u-bordeaux.fr
- Subject: Re: Wrong x86 assembler in the kernel
- From: Bill Allombert <Bill.Allombert@math.u-bordeaux.fr>
- Date: Fri, 20 Sep 2024 09:40:51 +0200
- Delivery-date: Fri, 20 Sep 2024 09:40:58 +0200
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- In-reply-to: <Zuy2tdgpYAShAbxq@debian.attlocal.net>
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- References: <Zuy2tdgpYAShAbxq@debian.attlocal.net>
On Thu, Sep 19, 2024 at 04:41:41PM -0700, Ilya Zakharevich wrote:
> It seems that even ChatGPT produces better code than one in PARI :―(
>
> According to
> https://www.felixcloutier.com/x86/bsr#flags-affected
This page does not mention the carry nor the CF flag.
> the code for bfffo() needs a trailing
> : "cc"
Do you have a test case ?
Cheers,
Bill.