mirrors/yosys
3
0
Fork 0
mirror of https://github.com/YosysHQ/yosys synced 2025-11-04 13:29:12 +00:00
Code Activity

ice40: Honor the "dont_touch" attribute in FFSSR pass

Browse source 
This is useful if you want to place FF manually ... can't merge SR in those
because it might make the manual placement invalid

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
This commit is contained in:
Sylvain Munaut 2018-12-08 22:46:28 +01:00
parent 47a5dfdaa4
commit add6ab9b2a
1 changed files with 3 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

3
techlibs/ice40/ice40_ffssr.cc
View file

@ -81,6 +81,9 @@ struct Ice40FfssrPass : public Pass {
for (auto cell : ff_cells) for (auto cell : ff_cells)
{ {
if (cell->get_bool_attribute("\\dont_touch"))
continue;
SigSpec sig_d = cell->getPort("\\D"); SigSpec sig_d = cell->getPort("\\D");
if (GetSize(sig_d) < 1) if (GetSize(sig_d) < 1)