On Fri, May 20, 2022 at 12:08:02PM +0100, Maciej W. Rozycki wrote:
> On Thu, 19 May 2022, Paul Cercueil wrote:
> 
> > About the real issue: Maybe the last "addu" in csum_tcpudp_nofold() should be
> > a "daddu"?
> 
>  It doesn't matter whether there is ADDU or DADDU anymore, given that 
> commit 198688edbf77 ("MIPS: Fix inline asm input/output type mismatch in 
> checksum.h used with Clang") has added a redundant 32-bit sign-extension 
> operation right afterwards, regressing size/performance by an extra 
> instruction in this performance-critical code as a workaround for a stupid 
> compiler.

Shouldn't this concern have been addressed by Tiezhu's follow up?

https://lore.kernel.org/1617359240-16609-1-git-send-email-yangtiezhu@loongson.cn/

I guess it never got picked up?

Cheers,
Nathan