[Libre-soc-bugs] [Bug 617] add SVP64 predication to TestIssuer

bugzilla-daemon at libre-soc.org bugzilla-daemon at libre-soc.org
Wed Mar 24 05:12:32 GMT 2021


--- Comment #13 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
for skipping it is probably simpler and shorter to use this:

* already_done = (1<<srcstep) - 1 # zero on start
* temp = predicatemask | already_done
* startfrom_srcstep = cntlzero(temp)

also it starts from srcstep so is re-entrant for return from interrupts.

PriorityEncoder should give the right count.  a clock worth of re-decoding for
PowerDecoder2 will still be needed.

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