[Patch: i386] Prohibit invalide ISA combination

H.J. Lu hjl.tools@gmail.com
Fri Dec 5 20:52:00 GMT 2008


On Fri, Dec 5, 2008 at 12:43 PM, Andrew Pinski <pinskia@gmail.com> wrote:
> On Fri, Dec 5, 2008 at 7:36 AM, Ye, Joey <joey.ye@intel.com> wrote:
>> This patch solves http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38201
>
> Why do we want to do this restriction again?  It is one thing if the
> instructions overlap but we should allow users to decide if they want
> to have these instruction sets turned on.
>
> Thanks,
> Andrew Pinski
>

What should gcc generate with -mfma -msse5 for

---
double f;

void
foo (double x, double y, double z)
{
  f = x * y + z;
}
---


-- 
H.J.



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