yosys
https://github.com/cliffordwolf/yosys
C++
Yosys Open SYnthesis Suite
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- Issues
- synth_gowin: default wide-LUT mapping is larger and slower than -nowidelut
- shuffle: new pass to deterministically reorder design objects
- bitpattern: add performance test
- CMake Error config without abc
- proc, kernel: improve multiple source location tracking
- kernel: special interning for source locations
- proc: optimize pattern matching for real world switch pattern sequences
- Add abc target guard
- Simplifying Build and Test Instructions
- read_verilog: unsized based literal with bit 31 set is sign-extended / 33 bits wide ('h80000000 in a 40-bit assign, 'shFFFFFFFF == -1)
- Docs
- C++ not yet supported