IF conversion bug with CC0

[Jeff Law]

On 04/04/2016 03:13 PM, Dan wrote:
> Jeff,
>
> Thank you for your quick response!
>
> Yes, I have a custom ISA.  I am building a custom back end.  The
> project, in its current state, can be found at:
>
> http://opencores.com/project,zipcpu
>
> Can you tell me whether the difference between CC0 processing and
> non-CC0 processing is a GCC difference or a target ISA difference?
It's a difference in how you express condition code handling from your 
ISA to GCC.

 From a 30 second view of your ISA, it appears that most 
arithmetic/logicals unconditionally set the condition codes.

I would suggest modeling condition code handling similar to how it's 
done on the x86 port.

jeff