Revert enable check

diff --git a/passes/opt/opt_rmdff.cc b/passes/opt/opt_rmdff.cc
index d10cf508f528188b082dd0cb6017fb0df63b59a3..2abffa2a9d40a9ee9d07ece33efb878c9fc8f2d8 100644 (file)
--- a/passes/opt/opt_rmdff.cc
+++ b/passes/opt/opt_rmdff.cc
@@ -385,9 +385,7 @@ bool handle_dff(RTLIL::Module *mod, RTLIL::Cell *dff)
        //                            (ii) reset value is same as constant D
        //                        and (a) has no initial value
        //                            (b) initial value same as constant D
-       //                        and (1) has no enable signal
-       //                            (2) enable is always active
-       if (sig_d.is_fully_const() && (!sig_r.size() || val_rv == sig_d.as_const()) && (!has_init || val_init == sig_d.as_const()) && (!sig_e.size() || (sig_d.is_fully_undef() && !has_init))) {
+       if (sig_d.is_fully_const() && (!sig_r.size() || val_rv == sig_d.as_const()) && (!has_init || val_init == sig_d.as_const())) {
                // Q is permanently D
                mod->connect(sig_q, sig_d);
                goto delete_dff;