On Tue, Mar 16, 2010 at 1:30 PM, Paolo Carlini <paolo.carl...@oracle.com> wrote: > On 03/16/2010 10:20 PM, H.J. Lu wrote: >> That is not true. The new -m32 default ISA on x86-64 is i686 + MMX + SSE + >> SSE2. >> It is Pentium 4, not i686. For historical reason, we define __k8 >> instead of __pentium4. >> > Ah, ok, this is what I was missing! We have *more* than i686. Thus I can > check for __k8. >
Please check __SSE__ since __k8 won't be defined for -march=atom. -- H.J.
