On Mon, 19 Apr 2010 19:14:42 +0100
Mel Gorman <mel@xxxxxxxxx> wrote:
> On Mon, Apr 19, 2010 at 07:01:33PM +0900, KAMEZAWA Hiroyuki wrote:
> I'll verify the theory tomorrow but it's a plausible explanation. On a
> different note, where did config options like the following come out of?
>
> CONFIG_ARCH_HWEIGHT_CFLAGS="-fcall-saved-rdi -fcall-saved-rsi -fcall-saved-rdx -fcall-saved-rcx -fcall-saved-r8 -fcall-saved-r9 -fcall-saved-r10 -fcall-saved-r11"
>
> I don't think they are a factor but I'm curious.
>
Hmm ? arch/x86/Kconfig.
config ARCH_HWEIGHT_CFLAGS
string
default "-fcall-saved-ecx -fcall-saved-edx" if X86_32
default "-fcall-saved-rdi -fcall-saved-rsi -fcall-saved-rdx -fcall-saved-rcx -fcall-saved-r8 -fcall-saved-r9 -fcall-saved-r10 -fcall-saved-r11" if X86_64
Seems to be from
patches/x86-add-optimized-popcnt-variants.patch
Thanks,
-Kame
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