Change x86 default arch for 4.5?

[H.J. Lu]

On Sun, Feb 21, 2010 at 1:07 PM, Erik Trulsson <ertr1013@student.uu.se> wrote:
> On Sun, Feb 21, 2010 at 12:27:34PM -0800, H.J. Lu wrote:
>> On Sun, Feb 21, 2010 at 12:22 PM, Erik Trulsson <ertr1013@student.uu.se> wrote:
>> >>
>> >> I agreed that gcc for x86 should choose a sensible default for 95% of
>> >> current x86 processors in use. People with those old processors can
>> >> use older gcc or -march=.
>> >>
>> >> Default to SSE2 is a good first step.
>> >
>> > I think you vastly underestimate the number of older x86 processors in
>> > use.
>> >
>>
>> There is nothing which stops them from using -march=i386. It just may not
>> be the default.
>
> That argument cuts both ways you know.  There is nothing stopping
> people with the latest CPUs from using -march=  to get code optimised
> for their hardware.  It just may not be the default.

That is where majority comes in.

-- 
H.J.