Re: register sets

 I have several examples where My 66000 with only 32-GPRs compiles
to fewer instructions than RISC-V with 32+32 registers.
 I have other examples where My 66000 does not need spill/fill code
and RISC-V does, too.
 

>
I like having the extra register files, it is just a personal
programming convenience. It reduces the pressure on the general-purpose
register file.

 Universal constants also reduces pressure both on ISA on the GPRs, and
on executing instructions.

Stark uses a four bit code to encode where on the cache line a large constant is located. The assembler just piles them up at the end of the cache line. Sometimes space is wasted if an instruction with a constant will not fit on the cache line. I think it is <6%. It has got to be close to the finagling that RISCV does for larger constants.

  Changing the capital R in RISC into a lower case r ?!?

Lower case r?
Been working on predicate logic tonight. Predicate shadow is limited to six instruction due to a limited mask size. Can always code more of the same predicate to skip more instructions.
I have the code searching the ROB backwards until a predicate instruction is encountered, to determine if there is a predicate. Searching fewer instructions helps. Probably not the cleverest way of doing things, sort of brute force.