[Libre-soc-bugs] [Bug 413] DIV "trial" blocks are too large

bugzilla-daemon at libre-soc.org bugzilla-daemon at libre-soc.org
Fri Jul 3 05:40:41 BST 2020


https://bugs.libre-soc.org/show_bug.cgi?id=413

--- Comment #11 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
>>> 378*379
143262

by simply cutting out one of the comparisons all 64 of the mid-core stages have
been cut in half, the VST file size is 250k for each QTY 64 core_NNN which has
saved another 50,000 cells (which is i think somewhere around 250,000 gates).

with the trial_compare_rhs being three times larger than the 64 bit numbers
it is working from this is why the number of gates is so massive.

we seriously need to rethink this.

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