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Changed behavior of "equate pins" to detect placeholder cells as 

a different way of treating "black box" cells.  Even when the
"-blackbox" option is specified, any cell that has no definition
will be treated as a black box.  This allows comparison of a
black-box netlist against a non-black-box netlist, such as a
verilog netlist vs. a SPICE netlist, without forcing the black-box
attribute on the SPICE netlist.  Then, if the SPICE netlist
contains cells without elements such as fill/decap/tap cells,
they can be flattened and removed instead of forcing an error or
requiring the use of "ignore".
This commit is contained in:
Tim Edwards 2020-03-03 10:50:45 -05:00
parent f7037fc9e6
commit 240a276431
1 changed files with 23 additions and 7 deletions
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30
tcltk/tclnetgen.c
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@ -2959,15 +2959,31 @@ _netcmp_equate(ClientData clientData,
case PINS_IDX:
if ((ElementClasses == NULL) && (auto_blackbox == FALSE)) {
if (CurrentCell == NULL)
if (CurrentCell == NULL) {
Fprintf(stderr, "Equate elements: no current cell.\n");
Fprintf(stderr, "Equate pins: cell %s and/or %s has no elements.\n",
name1, name2);
Tcl_SetObjResult(interp, Tcl_NewBooleanObj(0));
return TCL_OK;
Tcl_SetObjResult(interp, Tcl_NewBooleanObj(0));
return TCL_OK;
}
else if ((tp1->flags & CELL_PLACEHOLDER) ||
(tp2->flags & CELL_PLACEHOLDER)) {
if (tp1->flags & CELL_PLACEHOLDER) {
Fprintf(stdout, "Warning: Equate pins: cell %s "
"has no definition, treated as a black box.\n", name1);
}
if (tp2->flags & CELL_PLACEHOLDER) {
Fprintf(stdout, "Warning: Equate pins: cell %s "
"has no definition, treated as a black box.\n", name2);
}
}
else {
Fprintf(stdout, "Equate pins: cell %s and/or %s "
"has no elements.\n", name1, name2);
Tcl_SetObjResult(interp, Tcl_NewBooleanObj(0));
return TCL_OK;
}
}
else if (ElementClasses == NULL) {
/* This has been called outside of a netlist compare, */
if (ElementClasses == NULL) {
/* This may have been called outside of a netlist compare, */
/* probably to force name matching of pins on black-box */
/* devices. But MatchPins only works if tp1 == Circuit1 */
/* and tp2 == Circuit2, so preserve these values and */