[Libre-soc-isa] [Bug 1056] questions and feedback (v2) on OPF RFC ls010

bugzilla-daemon at libre-soc.org bugzilla-daemon at libre-soc.org
Wed May 31 16:15:10 BST 2023


--- Comment #37 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
> (in LE, since that's always what svp64 uses for registers):

it's way more than that: it's what the *Power ISA* uses for
registers (all of them).  it took several hours review of the
spec on VSX (pretty much every instruction) to *deduce* that
arithmetic ls LE-ordered-arithmetic.  the key instruction
which helped determine it was a VSX shift instruction,
which had a worked example.

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