[Libre-soc-isa] [Bug 213] SimpleV Standard writeup needed

bugzilla-daemon at libre-soc.org bugzilla-daemon at libre-soc.org
Tue Oct 6 02:13:49 BST 2020


--- Comment #9 from Cole Poirier <colepoirier at gmail.com> ---
(In reply to Luke Kenneth Casson Leighton from comment #8)
> i therefore asked cole to collate the CSV files, strip the opcode function
> unit comment and sgl fields and to sort and uniquify the results, then
> cross-reference those against the original CSV files to identify the "types"
> of instructions.

Got to the point of a 'table' with all of the insns (excluding sprs becuase
they dont have common column names with all the other opcodes), but it seems
that all rows are 'unique', which leads me to believe that I misunderstood what
you meant by unique. On what metric, column, or columns should the uniqueness
be tested?

> how many 2-operand instructions, how many 3-operand etc.
> a crucial thing we will have to decide is what to do about CRs.  VSX
> auto-collates into CR7 which i am not keen on.

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