[Libre-soc-isa] [Bug 1023] crternlut/crbinlut analysis needed of CR regfile usage

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=1023

--- Comment #3 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
crbinlog

| 0.5|6.8 | 9.11|12.14|15.17|18.21|22...30  |31|
| -- | -- | --- | --- | --- |-----| -------- |--|
| NN | BT | BA  | BB  | BC  |m0-m3|000101110 |0 |

->

same trick except i think it possible to just leave out the TLI Field


| 0.5| 6-8 | 9-10 | 11-13 | 14-15 | 16-18 | 19-25 |26-30 | 31 | Form     |
|----|-----|------|-------|-------|-------|-------|------|----|----------|
| PO | BF  | msk  | BFA   | msk   |  BFB  | ///   |  XO  | /  | CRB-Form |

this means decoding both instructions is not costly.

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