[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 #13 from Jacob Lifshay <programmerjake at gmail.com> ---
one thing that needs to be tested is an associative but not commutative
function, fcpsgn is a good candidate (there aren't many that are single
instructions). this ensures the order is correct.

you can also test a neither associative nor commutative function to ensure the
tree is evaluated in the proper order, such as sub or andc.

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