Comment by snvzz

Comment by snvzz 10 months ago

5 replies

Sounds extremely subjective.

i.e. it does not have my favored instructions or addressing modes, so it must be worse.

jodrellblank 10 months ago

You’re replying to the author of the post explaining why he would have to do more in software to emulate RISC-V than MIPS and that would be more effort and run slower, and you’re telling him “that’s extremely subjective”?

How is that subjective?

  • Dylan16807 10 months ago

    "well known design deficiency" is the subjective part.

smolder 10 months ago

Much like juggling with your feet instead of hands is subjectively worse.

  • snvzz 10 months ago

    From a hardware perspective, juggling is better without flags and without unnecessary addressing modes.

    Neither are concepts RISC-V invented, but rather, adopted. Ideas that have been plenty tested out there, and proven beneficial.

    Large body of evidence trumps intuition and guesswork. Most of this is documented in the spec itself and/or in:

    Computer Architecture: A Quantitative Approach (John L. Hennessy, David A. Patterson)

    • smolder 10 months ago

      I just meant that it's somewhat unergonomic when dealing with the instruction set directly, FWIW. Thanks for the reference.