Re: Does -march=r5000 imply HAVE_64BIT_GPRS?

["H . J . Lu" <hjl at lucon dot org>]

On Fri, Aug 17, 2001 at 11:47:35AM +0200, Thiemo Seufer wrote:
> H . J . Lu wrote:
> > On Fri, Aug 17, 2001 at 01:06:42AM +0200, Thiemo Seufer wrote:
> > > 
> > > [snip]
> > > > +  if (mips_opts.isa != mips_isa_from_cpu)
> > > > +    {
> > > > +      const struct mips_cpu_info *isa_ci;
> > > > +
> > > > +      /* -march=xxxx is not compatible with -mipsN. We use -mipsN to
> > > > +	 set the BFD arch.  */
> > > 
> > > Why should they be incompatible?
> > 
> > mips_isa_from_cpu set by -march=r5000 is ISA_MIPS4. But mips_opts.isa
> > from -mips2 is ISA_MIPS2.
> 
> Well, and why shouldn't an arch be allowed to use a ISA below it's
> default _and_ it's arch specific insns in the same code?

That is exactly what my patch does. With "-march=r5000 -mips2",
currently we set the ISA level to MIPS4 in BFD. That is my
original problem. My patch will change it to set the ISA level
to MIPS2 in BFD.

H.J.