On Mon, Oct 9, 2017 at 10:01 AM, Paul Barker <[email protected]> wrote:
> On Mon, Oct 9, 2017 at 5:49 PM, Khem Raj <[email protected]> wrote:
>> On Mon, Oct 9, 2017 at 9:16 AM, Paul Barker <[email protected]> wrote:
>>> On Mon, Oct 9, 2017 at 5:04 PM, Khem Raj <[email protected]> wrote:
>>>> On Mon, Oct 9, 2017 at 6:15 AM, Paul Barker <[email protected]> wrote:
>>>>>
>>>>> I'm looking at what I can use to determine if sse2 is supported for a
>>>>> given machine/tune.
>>>>>
>>>>> In TUNE_FEATURES I could check for "core2" or "corei7" based on what's
>>>>> in oe-core, but not sure this will cover tunings which might be
>>>>> defined in other layers.
>>>>>
>>>>> Alternatively I could check TUNE_CCARGS for "-msse2" or later but that
>>>>> feels dirty.
>>>>>
>>>>> Any suggestions on this?
>>>>>
>>
>> Perhaps inverse is easier, meaning, set 387 for i586, i486 and i386
>> and leave the
>> defaults as it is for other variants
>
> Sadly that won't cover it. We'd also need to cover Pentium variants
> pre-Pentium4 and early AMD variants. It's SSE2 which is needed not the
> original SSE instructions.
>

Does testing X86ARCH32 work?
-- 
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