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| author | Alberto Gonzalez <boqwxp@airmail.cc> | 2020-03-08 06:34:47 +0000 |
|---|---|---|
| committer | Alberto Gonzalez <boqwxp@airmail.cc> | 2020-03-13 17:10:29 +0000 |
| commit | 0fda8308bccf6f97b31b104ea1e2b000e4b8c7c7 (patch) | |
| tree | 7ebed8b82028a5ddc35771917e16aba5774cf354 /kernel/yosys.cc | |
| parent | bfeba9ad11847e6a0cbe47f880f3642d5e3a8061 (diff) | |
| download | yosys-0fda8308bccf6f97b31b104ea1e2b000e4b8c7c7.tar.gz yosys-0fda8308bccf6f97b31b104ea1e2b000e4b8c7c7.tar.bz2 yosys-0fda8308bccf6f97b31b104ea1e2b000e4b8c7c7.zip | |
Add support for optimizing exists-forall problems.
Modifies smt2 backend to recognize `$anyconst` etc. assigned to a wire with the `maximize` or `minimize` attribute and emit `; yosys-smt2-maximize` or `; yosys-smt2-minimize` directives as appropriate.
Modifies `backends/smt2/smtbmc.py` and `smtio.py` to recognize those directives and emit a `(maximize ...)` or `(minimize ...)` command at the end of `smt_forall_assert()`, as described in the paper "νZ - An Optimizing SMT Solver" by Nikolaj Bjørner et al.
Adds an example `examples/smtbmc/demo9.v` to show how it can be used.
Diffstat (limited to 'kernel/yosys.cc')
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