[Libre-soc-bugs] [Bug 864] implement parallel prefix reduction in simulator

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=864

--- Comment #15 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
after some thought, adding in predication is too complex in hardware
and the simulator, or, more to the point, the existing predication
system should not be altered.

REMAP predication requires *post* index remap lookup, and in the case
of Matrix that requires three separate predicates: one for A matrix
one for B matrix and another for the result.

DCT/FFT needs one predicate per element (post remap) and Indexed as well.

all of which is too much to tackle immediately

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