Choice of number of temp/arg/saved registers.

[kasanovic]

The number of temp/arg/saved registers and their location in/out of the 8 RVC registers needs quantitative support.

[ghost]

What benchmarks need to be measured? They need to be representative in the embedded field. I recommend EEMBC and CSIBE, are there other benchmarks?

[kasanovic]

They would be a good starting point, as well as Embench. I think CSIBE might have a problem that it is only for object files, so doesn't make sense for RISC-V which does a lot of optimizations at link time.