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
