techmap: Add _TECHMAP_CELLNAME_ special parameter.

This parameter will resolve to the name of the cell being mapped.  The
first user of this parameter will be synth_intel_alm's Quartus output,
which requires a unique (and preferably descriptive) name passed as
a cell parameter for the memory cells.

1 files changed, 6 insertions, 0 deletions

diff --git a/passes/techmap/techmap.cc b/passes/techmap/techmap.cc
index f98d1564a..8e6630c89 100644
--- a/passes/techmap/techmap.cc
+++ b/passes/techmap/techmap.cc
@@ -643,6 +643,8 @@ struct TechmapWorker
 
 				if (tpl->avail_parameters.count(ID::_TECHMAP_CELLTYPE_) != 0)
 					parameters.emplace(ID::_TECHMAP_CELLTYPE_, RTLIL::unescape_id(cell->type));
+				if (tpl->avail_parameters.count(ID::_TECHMAP_CELLNAME_) != 0)
+					parameters.emplace(ID::_TECHMAP_CELLNAME_, RTLIL::unescape_id(cell->name));
 
 				for (auto &conn : cell->connections()) {
 					if (tpl->avail_parameters.count(stringf("\\_TECHMAP_CONSTMSK_%s_", log_id(conn.first))) != 0) {
@@ -1111,6 +1113,10 @@ struct TechmapPass : public Pass {
 		log("        When a parameter with this name exists, it will be set to the type name\n");
 		log("        of the cell that matches the module.\n");
 		log("\n");
+		log("    _TECHMAP_CELLNAME_\n");
+		log("        When a parameter with this name exists, it will be set to the name\n");
+		log("        of the cell that matches the module.\n");
+		log("\n");
 		log("    _TECHMAP_CONSTMSK_<port-name>_\n");
 		log("    _TECHMAP_CONSTVAL_<port-name>_\n");
 		log("        When this pair of parameters is available in a module for a port, then\n");