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yosys/kernel
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Emil J. Tywoniak 54742cd718 ffinit: an x init bit is the absence of a value, not a conflict 
Two wires whose init bits map to the same representative are legal --
they are connected -- and each extra alias makes it likelier. Today the
first one recorded wins and any later disagreement is a hard error, even
when one of the two is 1'x, which says nothing at all
(arch/ice40/bug1644: `\DAC1_i2s.left_1 [0] = 1'0 != 1'x`).

An x now loses to a defined value and never reports a conflict; two
defined values that disagree still do.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MQU5XCqDYY8MbivGkNRrDo
2026-07-21 16:52:31 +02:00
..
unstable patch: fix signorm commit broken by twine rename 2026-07-20 15:01:30 +02:00
binding.cc
binding.h
bitpattern.h Fix covers_nothing. 2026-07-06 13:26:00 +02:00
calc.cc End of file fix 2026-06-23 07:23:41 +02:00
cellaigs.cc WIP 2026-07-20 12:27:17 +02:00
cellaigs.h WIP 2026-07-20 12:27:17 +02:00
celledges.cc WIP 2026-07-20 12:27:17 +02:00
celledges.h WIP 2026-07-20 12:27:17 +02:00
cellhelp.py Remove trailing whitespaces 2026-06-23 07:24:59 +02:00
celltypes.h WIP 2026-07-20 12:27:17 +02:00
CMakeLists.txt twine 2026-07-20 12:26:39 +02:00
compressor_tree.cc twines phase-3 build fix: post-fork main files broken by twine migration 2026-07-20 15:01:30 +02:00
compressor_tree.h End of file fix 2026-06-23 07:23:41 +02:00
compute_graph.h
consteval.h WIP 2026-07-20 12:27:17 +02:00
constids.inc twines phase-3 build fix: post-fork main files broken by twine migration 2026-07-20 15:01:30 +02:00
cost.cc prevent IdString construction when looking up module from instance type 2026-07-20 12:27:17 +02:00
cost.h WIP 2026-07-20 12:27:17 +02:00
driver.cc WIP migration to twine 2026-07-20 12:27:18 +02:00
drivertools.cc WIP 2026-07-20 12:27:17 +02:00
drivertools.h WIP 2026-07-20 12:27:17 +02:00
ff.cc ff: fix src_twine 2026-07-20 15:01:30 +02:00
ff.h twine: fix replayability, reduce TwineSearch usage 2026-07-20 13:57:10 +02:00
ffinit.h ffinit: an x init bit is the absence of a value, not a conflict 2026-07-21 16:52:31 +02:00
ffmerge.cc WIP 2026-07-20 12:27:17 +02:00
ffmerge.h
fmt.cc WIP 2026-07-20 12:27:17 +02:00
fmt.h
fstdata.cc
fstdata.h
functional.cc functinoal: twines 2026-07-20 15:01:30 +02:00
functional.h functinoal: twines 2026-07-20 15:01:30 +02:00
gzip.cc
gzip.h
hashlib.h
io.cc
io.h Remove trailing whitespaces 2026-06-23 07:24:59 +02:00
json.cc End of file fix 2026-06-23 07:23:41 +02:00
json.h
log.cc rtlil: options for dumping twines 2026-07-20 15:01:30 +02:00
log.h WIP 2026-07-20 12:27:17 +02:00
log_compat.cc Add one more compatibility logger used in patches for some time 2026-06-12 14:44:26 +02:00
log_help.cc Fixup help contents source_file 2026-07-09 16:05:15 +12:00
log_help.h Fixup help contents source_file 2026-07-09 16:05:15 +12:00
macc.h WIP 2026-07-20 12:27:17 +02:00
mem.cc twine: fix replayability, reduce TwineSearch usage 2026-07-20 13:57:10 +02:00
mem.h
modtools.h WIP 2026-07-20 12:27:17 +02:00
newcelltypes.h newcelltypes: twines 2026-07-20 12:27:18 +02:00
pattern.h
pmux.h WIP 2026-07-20 12:27:17 +02:00
qcsat.cc WIP 2026-07-20 12:27:17 +02:00
qcsat.h
register.cc WIP migration to twine 2026-07-20 12:27:18 +02:00
register.h
rtlil.cc WIP opt_clean: garbage collect against the signorm index 2026-07-21 15:10:36 +02:00
rtlil.h WIP opt_clean: garbage collect against the signorm index 2026-07-21 15:10:36 +02:00
rtlil_bufnorm.cc WIP opt_clean: garbage collect against the signorm index 2026-07-21 15:10:36 +02:00
satgen.cc WIP 2026-07-20 12:27:17 +02:00
satgen.h WIP 2026-07-20 12:27:17 +02:00
scopeinfo.cc WIP 2026-07-20 12:27:17 +02:00
scopeinfo.h
sexpr.cc
sexpr.h
sigtools.h sigmap: take the signorm index's map directly instead of via connections() 2026-07-21 12:53:38 +02:00
tclapi.cc twine: avoid TwinePool::lookup 2026-07-20 12:27:18 +02:00
threading.cc
threading.h
timinginfo.h WIP 2026-07-20 12:27:17 +02:00
topo_scc.h Remove trailing whitespaces 2026-06-23 07:24:59 +02:00
twine.cc twine: fix replayability, reduce TwineSearch usage 2026-07-20 13:57:10 +02:00
twine.h twine: fix replayability, reduce TwineSearch usage 2026-07-20 13:57:10 +02:00
utils.h twine: fix replayability, reduce TwineSearch usage 2026-07-20 13:57:10 +02:00
version.cc.in Include build datetime in scl cache hash. 2026-07-10 12:44:34 +02:00
yosys.cc WIP 2026-07-20 12:27:17 +02:00
yosys.h Include build datetime in scl cache hash. 2026-07-10 12:44:34 +02:00
yosys_common.h twine: fix replayability, reduce TwineSearch usage 2026-07-20 13:57:10 +02:00
yosys_config.h.in
yw.cc
yw.h prevent IdString construction when looking up module from instance type 2026-07-20 12:27:17 +02:00