In the Yosys synthesis script the hilomap command used for techmapping constant drivers is called with the wrong arguments. For instance, for sky130 it runs
hilomap -hicell sky130_fd_sc_hd__conb_1 HI -locell sky130_fd_sc_hd__conb_1 LO
This results in the step being skipped and some warnings:
56. Executing HILOMAP pass (mapping to constant drivers).
Warning: Selection "sky130_fd_sc_hd__conb_1" did not match any module.
Warning: Selection "LO" did not match any object.
In the Yosys synthesis script the
hilomapcommand used for techmapping constant drivers is called with the wrong arguments. For instance, for sky130 it runshilomap -hicell sky130_fd_sc_hd__conb_1/HI -locell sky130_fd_sc_hd__conb_1/LOinstead of
hilomap -hicell sky130_fd_sc_hd__conb_1 HI -locell sky130_fd_sc_hd__conb_1 LOThis results in the step being skipped and some warnings:
This is a regression from OpenLane 1.