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Minor things:
- add required time support
- clean end-of-line markers (CR is more preferable than CR-LF)
- prevent node name clash between PO and internal names (i.e. [484])
- add the output of ABC version/platform in the output files
- fix gcc compiler warnings
Major things:
- substantially improving performance of FRAIGing
(used in equivalence checking and lossless synthesis)
- developing a new (more efficient and faster) AIG rewriting package
- implementing additional rewriting options for delay optimization
- making technology mapping applicable to very large designs by adding
on-demand cut computation currenlty available as a stand-alone command "cut"
- experimenting with yield-aware standard-cell mapping
- developing a mapper for arbitrary programmable macrocell
architecture specified using a configuration file (this mapper should work
for both cell-evalution and mainstream FPGA mapping)
- developing incremental retiming and incremental integrated sequential
synthesis
- developing sequential verification combined with integrated sequential
synthesis
Other great projects:
- hierarchical BLIF input in ABC (output of black boxes)
- high-effort logic synthesis for hard miters (cofactoring, Boolean division)
- incremental retiming and sequential integration
- 5-6 input AIG rewriting using new ideas
- placement-aware mapping
- mapping into MV cells
- better ways of constructing BDDs
- SAT solver with linear constraints
- specialized synthesis for EXORs and large MUXes
- sequential AIG rewriting
Other:
- completely silent mode
High-priority changes:
- add a new mode to "fpga" to differentiate latch-to-latch and pad-to-latch paths
- support asynchronous set/reset in retiming and retiming/mapping
- port "mfs" into ABC
- reduce the latch count in the new version of "retime" and "spfga"
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