Description
In the Intel® Quartus® Prime Pro Edition Software, you can add a preserve register Quartus Setting file (.qsf) assignment to prevent a register from being placed in Hyper-Register.
Resolution
To work around this, use the following Quartus Setting file (.qsf) assignment:
set_instance_assignment -name PRESERVE_REGISTER ON -to core_inst|top_inst|local_reg[*]