linux-kernel - Re: [PATCH] powerpc: force inlining of csum_partial() to avoid multiple csum

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Message-ID: <cb4602cc-bf06-ebdc-b6df-0e1ff902dfd5@csgroup.eu>
Date:   Thu, 15 Oct 2020 15:59:44 +0200
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     Segher Boessenkool <segher@...nel.crashing.org>
Cc:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] powerpc: force inlining of csum_partial() to avoid
 multiple csum_partial() with GCC10



Le 15/10/2020 à 15:25, Segher Boessenkool a écrit :
> Hi!
> 
> On Thu, Oct 15, 2020 at 10:52:20AM +0000, Christophe Leroy wrote:
>> With gcc9 I get:
> 
> <snip>
> 
>> With gcc10 I get:
> 
> <snip>
> 
>> gcc10 defines multiple versions of csum_partial() which are just
>> an unconditionnal branch to __csum_partial().
> 
> It doesn't inline it, yes.
> 
> Could you open a GCC PR for this please?
> 

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97445

Christophe