7 Commits

Author	SHA1	Message	Date
Eddie Hung	55dc5a4e4f	abc9: fix SCC issues (#2694) ... * xilinx: add SCC test for DSP48E1 * xilinx: Gate DSP48E1 being a whitebox behind ALLOW_WHITEBOX_DSP48E1 Have a test that checks it works through ABC9 when enabled * abc9 to break SCCs using $__ABC9_SCC_BREAKER module * Add test * abc9_ops: remove refs to (* abc9_keep *) on wires * abc9_ops: do not bypass cells in an SCC * Add myself to CODEOWNERS for abc9* * Fix compile * abc9_ops: run -prep_hier before scc * Fix tests * Remove bug reference pending fix * abc9: fix for -prep_hier -dff * xaiger: restore PI handling * abc9_ops: -prep_xaiger sigmap * abc9_ops: -mark_scc -> -break_scc * abc9: eliminate hard-coded abc9.box from tests Also tidy up * Address review	2021-03-29 22:01:57 -07:00
Eddie Hung	d3b53bc495	abc9_ops: -reintegrate use SigMap to remove (* init *) from $_DFF_[NP]_	2020-05-29 17:17:40 -07:00
Eddie Hung	67fc0c3698	abc9: use (* abc9_keep *) instead of (* abc9_scc *); apply to $_DFF_?_ ... instead of moving them to $__ prefix	2020-05-14 16:44:35 -07:00
Eddie Hung	13f9d65b6f	abc9: preserve $_DFF_?_.Q's (* init *); rely on clean to remove it	2020-05-14 10:33:57 -07:00
Eddie Hung	e79127fceb	Cleanup; reduce Module::derive() calls	2020-05-14 10:33:57 -07:00
Eddie Hung	722540dbf9	abc9: not enough to techmap_fail on (* init=1 *), hide them using $__	2020-05-14 10:33:56 -07:00
Eddie Hung	48052ad813	abc9: add flop boxes to basic $_DFF_P_ and $_DFF_N_ too	2020-05-14 10:33:56 -07:00