Re: [RFC PATCH v2 -tip 0/4] x86: signal handler improvement

[Hiroshi Shimamoto]

H. Peter Anvin wrote:
> Hiroshi Shimamoto wrote:
>>> This is a gcc failure, and should be reported to the gcc people.
>> Does this gcc failure mean unnecessary storing into stack?
>>
> 
> Yes, it should be able to process this in a register, instead of storing 
> to the stack and then merging later.
> 
> It's possible it's trying to do that to hide latency, but that's clearly 
> a lose in this case.

OK, I'll test with some gcc versions.
It's necessary to check outputs of the latest gcc, I think.

thanks,
Hiroshi Shimamoto
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/