Re: Specific support for Intel Atom architecture

[H. Peter Anvin]

Willy Tarreau wrote:
>>>>
>>>> $(call cc-option,-march=atom,-march=i686)
>>> if it's an in-order architecture, wouldn't it be better to tune for
>>> i386 or i486 instead ?
>> -march isn't about tuning, it's about supported instructions.
> 
> agreed, but unless specified otherwise using -mtune, -march also sets
> default tuning for the indicated CPU. At least in my experience.
> 
>> The right line is
>> $(call cc-option,-march=atom,-march=core2)

For really old gcc's (we support all the way back to gcc 3.2 still)
-march=core2 might not work either.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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