Bugs in MIPS FUNCTION_ARG_REGNO_P ?

[Eric Christopher]

> 
> What exactly do you believe to be correct?  The macro implementation, or 
> the statement that the O64 ABI does not use floating-point registers for 
> arugment-passing?
> 

I would have thought the macro was correct, but...

> The latter statement does not match what the rest of the compiler does 
> -- compiling test programs with -mabi=o64 shows that $f12, $f13, $f14 
> are are used for floating-point arguments, and there are comments to 
> that effect in the code.
> 

Yeah. And they should be used.

> So, I guess you believe the macro to be correct?  I'm confused as to how 
> that could be, since it seems never to return true for a floating-point 
> register when using the O64 ABI.
> 
> Well, perhaps Jim can shed some lite, as you say.

I'm trying to track down when the change was made to add mips_abi !=
ABI_O64. I really hope it wasn't me :) or maybe Jim can tell us that it
makes sense somehow - in some weird way.

-eric

-- 
Eric Christopher <echristo@redhat.com>