[Libre-soc-isa] [Bug 936] change the spec so RC1=1 fail-first instructions always write all outputs up to and including failing subvector

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=936

--- Comment #5 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
(In reply to Luke Kenneth Casson Leighton from comment #4)

> DDFF subvectors are basically not practical.

the reason is that if you truncate SUBVL it is meaningless.
and also SUBVL is specified in the instruction, not in SVSTATE.

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