On Fri, Jun 20, 2014 at 03:22:52PM -0700, H.J. Lu wrote:
> On Fri, Jun 20, 2014 at 2:42 PM, Jakub Jelinek <ja...@redhat.com> wrote:
> > --- gcc/config/i386/driver-i386.c.jj 2014-05-14 14:45:54.000000000 +0200
> > +++ gcc/config/i386/driver-i386.c 2014-06-20 18:59:57.805006358 +0200
> > @@ -745,6 +745,11 @@ const char *host_detect_local_cpu (int a
> > /* Assume Core 2. */
> > cpu = "core2";
> > }
> > + else if (has_longmode)
> > + /* Perhaps some emulator? Assume x86-64, otherwise gcc
> > + -march=native would be unusable for 64-bit compilations,
> > + as all the CPUs below are 32-bit only. */
> > + cpu = "x86-64";
> > else if (has_sse3)
> > /* It is Core Duo. */
> > cpu = "pentium-m";
> >
> > Jakub
>
> host_detect_local_cpu guesses the cpu based on the real processors.
> It doesn't work with emulators due to some conflicts. This isn't the
> only only place which has the same issue. I prefer something like
> this.
I'm fine with your patch too. Let's wait what Uros (or other i?86
maintainers) pick up.
Jakub
