yosys
https://github.com/cliffordwolf/yosys
C++
Yosys Open SYnthesis Suite
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- Issues
- Built yosys.wasm is too large
- Add an optional yosys start script
- wreduce: Optimize signedness when possible
- macc: Stop using the B port
- Add `$macc_v2`
- synth_xilinx error in simple demo
- Add -blackbox option to setundef pass
- Deviation Between Yosys RTLIL EBNF Docs and RTLIL Lex/Yacc Frontend
- Synthesis with -nowidelut gives drastically better results
- read_verilog gives multiple drivers to variables initialized both in declaration and initial
- Docs
- C++ not yet supported